Training

Dr. John Leung is invested in training the next generation of dietitians, medical students, residents and fellows of various specialties and educational backgrounds. Dr. Leung offers short internships/outpatient rotations at Boston Food Allergy Center. In addition, BFAC also takes 1-2 international scholars with MD degree who want to advance their clinical and research training in food allergy and intolerances. Only applicants who are fluent in written and spoken English, and with Step 1 score higher than 235, are encouraged to apply. These training programs are unpaid, and a minimum of three months commitment is required. Training is tailored to the mentees’ career goal, educational background and level of training. Individualized reading materials, educational objectives and mini-research projects will be assigned and provided at the beginning of the rotations. To apply for electives, please submit a cover letter with your CV to admin@bfac.org.

 
  • Medical Residents
  • Dietetic Interns
  • International MD
  • Gap Year Pre-med
  • Volunteers

Medical Residents

Medical Resident Training Objectives


First Day Information
The resident should contact the clinic at least 2 days prior to starting the rotation to review the resident's career goals, days off during the rotation, and other considerations.
Resident Expectations
The resident will be expected to directly participate in attending clinics through H&Ps, oral presentations and case discussion, and documentation.
Goals and Objectives
OVERALL EDUCATIONAL GOAL:
The purpose of the elective is to introduce the resident to the field of allergy & immunology. Residents will learn to recognize and manage a broad array of allergy and immunology diseases.
OBJECTIVES:
Demonstrate competence in the recognition and basic management of:
  • Allergic rhinitis and conjunctivitis
  • Anaphylaxis
  • Asthma
  • Atopic dermatitis
  • Drug allergies
  • Eosinophilic esophagitis and eosinophilic gastrointestinal disorders
  • Food allergies
  • Immune deficiency
  • Stinging insect allergy
  • Urticaria and angioedema (acute and chronic)

Describe indications for the following studies as well as the basics of interpreting them:
  • Skin prick testing
  • Intradermal skin testing
  • Serum IgE testing
  • Pulmonary function testing
  • Oral food challenges
  • Drug desensitization
  • Hydrogen breath testing
  • Patch testing
  • Understand the basic pharmacology and dietary therapy:
  • Antihistamines
  • Epinephrine
  • Intranasal steroids and antihistamine
  • Nasal and sinus rinse
  • Subcutaneous allergen immunotherapy (allergy shots)
  • Inhaled steroids
  • Anti-IgE therapy (omalizumab)
  • Leukotriene antagonists
  • Intravenous immunoglobulin
  • Empirical elimination diet
  • Low FODMAP diet

EVALUATION:
Resident performance is evaluated by direct faculty assessment during clinical activities, including oral presentations, written notes, evidence of outside reading, and professionalism. Punctuality is very important at BFAC. An evaluation is completed at the end of the resident rotation by Dr. Leung and will be sent back to your program. Resident will be evaluated by staff and patients at BFAC as well.
LEARNING ACTIVITIES OF THE ROTATION:
The principle learning activity of residents involves the assessment of patients in outpatient allergy and immunology attending clinics. Residents will participate in attending clinics on Mondays, Tuesdays and Friday. Saturday is optional and per directives from your internal medicine programFirst Day Information

Book appointment

How to make an appointment?
617-804-6767 or online booking (chose “Immigration Medical Exam” as the reason for visit).

What is the process?
The process is simple. You call us and we will tell you what vaccines and lab you will need, based on your age and medical conditions. We will tell you where to obtain the labs and vaccines, and schedule a date and time for you to come to our office for the required physical examination. You will be able to to pick up the certified i693 form on the same day when Dr. Leung conducts the physical examination, so you only have to come to office once.

Covid-19

Are you open during COVID-19 crisis?
Yes.

Is it safe to come to office?
Yes. At Boston Food Allergy Center the safety of our staff and patients is our top priority. We have implemented many safety measures to ensure your safety during your visit.

Do you offer virtual visit for the immigration?
Yes. We first do a virtual interview to find out what lab and vaccines you need. You only have to come to office once to do a physical examination and pick up the certified forms in sealed envelope

Do you have a COVID-19 surcharge?
No

Fees

How much do you charge for the application?
$370

What does this fee include?
Medical examination only. Labs and vaccines are extra.

How much do you charge for labs if I want to pay out-of-pocket?
The out-of-pocket lab fee is $160 for patients 15 yo and older, $90 for patients younger than 15.

How do I know that you are not overcharging me?
We price-match any online listed price from a USCIS certified civil surgeon within 20 miles of our clinic.

Labs

What labs do I need?
If you are 15 or older, you need quantiFERON, RPR, and gonorrhea labs. If you are younger than 15, you only need the quantiFERON.

Where can I get the lab done?
During the virtual interview, we will send you an order for the labs. You can obtain your labs at your PCP’s office, commercial labs, or at our clinic.

Can I use insurance to pay for the labs?
Most insurance companies will not cover labs obtained solely for the purpose of an immigration application. You can always call your insurance to find out. Our office will not be able to tell you about your specific insurance coverage.

I did the same lab work last year. Can I use those results?
The immigration medical exam is supposed to be a “snap shot” of your health. The labs need to be ordered by the civil surgeon.

I do not have insurance. What is the most affordable way to pay for the labs?
Thanks to the high volume of applicants we serve, we are able to negotiate with Quest Diagnostics for a significant discount. Our lab fee is $160 for 15 or older, and $90 for younger than 15. To further ensure our prices are the most affordable, we price-match any price listed online by a certified civil surgeon within 20 miles of our clinic.

I have HIV. I heard it may delay the completion of the application. Is it true?
Patients with HIV may experience a delay as government guidelines require a chest x-ray and referral to the Public Health Department for a sputum culture to rule out active tuberculosis.

Please Note: If you choose to obtain your labs elsewhere, please make sure the outside lab does not alter the orders Dr. Leung prescribe to you. For example, it is required that a lab known as “RPR” to be checked. RPR is a test to screen for syphilis. More often than not, when the applicant takes the RPR lab order to an outsider lab, the outside lab may change the order to a newer generation of syphilis test that looks for a specific syphilis antibody. The US government will not accept those newer generation antibody tests as the first screening test.

Vaccines

What vaccine do I need?
It depends on your age and medical conditions. We will obtain a detailed medical history during our virtual interview and tell you what vaccines you need based on CDC guidelines.

Where can I obtain the required vaccine(s)?
You can obtain the vaccine(s) at your PCP office and local pharmacy. You can also obtain them at our clinic if you are paying out-of-pocket.

Will my insurance pay for my vaccine?
Most likely. We will tell you what vaccine(s) you need and in what sequence. Then, you can call your insurance to find out which vaccine(s) will be covered.

If insurance does not cover the vaccine(s), how much will they cost?
It depends on what vaccines you need. Once Dr. Leung determines what vaccine you need, we will provide you with the price. You can also call your local pharmacy.

If my insurance pays for my vaccines, can I get them at Dr. Leung’s office?
No. We are unable to bill your insurance for vaccine(s) as your civil surgeon. We encourage you to go to your PCP’s office or local pharmacy to get the needed vaccines if your insurance covers them. Dr. Leung will give you the prescriptions. You can also get the vaccines at Dr. Leung’s office if you are willing to pay out of pocket.

I lost my childhood immunization records? Is that a problem?
For immigration medical exam purposes, if it is not documented, it never happened. But it is a-OK. For some vaccines, we can check the antibody level in your blood as a proof of immunization. For others, we may have to re-administer them.

Medical Resident Training Objectives

First Day Information
The resident should contact the clinic at least 2 days prior to starting the rotation to review the resident's career goals, days off during the rotation, and other considerations.

Resident Expectations
The resident will be expected to directly participate in attending clinics through H&Ps, oral presentations and case discussion, and documentation.

Goals and Objectives

OVERALL EDUCATIONAL GOAL:
The purpose of the elective is to introduce the resident to the field of allergy & immunology. Residents will learn to recognize and manage a broad array of allergy and immunology diseases.

OBJECTIVES:
Demonstrate competence in the recognition and basic management of:

  • Allergic rhinitis and conjunctivitis

  • Anaphylaxis

  • Asthma

  • Atopic dermatitis

  • Drug allergies

  • Eosinophilic esophagitis and eosinophilic gastrointestinal disorders

  • Food allergies

  • Immune deficiency

  • Stinging insect allergy

  • Urticaria and angioedema (acute and chronic)

Describe indications for the following studies as well as the basics of interpreting them:

  • Skin prick testing

  • Intradermal skin testing

  • Serum IgE testing

  • Pulmonary function testing

  • Oral food challenges

  • Drug desensitization

  • Hydrogen breath testing

  • Patch testing

Understand the basic pharmacology and dietary therapy:

  • Antihistamines

  • Epinephrine

  • Intranasal steroids and antihistamine

  • Nasal and sinus rinse

  • Subcutaneous allergen immunotherapy (allergy shots)

  • Inhaled steroids

  • Anti-IgE therapy (omalizumab)

  • Leukotriene antagonists

  • Intravenous immunoglobulin

  • Empirical elimination diet

  • Low FODMAP diet


EVALUATION:
Resident performance is evaluated by direct faculty assessment during clinical activities, including oral presentations, written notes, evidence of outside reading, and professionalism. Punctuality is very important at BFAC. An evaluation is completed at the end of the resident rotation by Dr. Leung and will be sent back to your program. Resident will be evaluated by staff and patients at BFAC as well.

LEARNING ACTIVITIES OF THE ROTATION:
The principle learning activity of residents involves the assessment of patients in outpatient allergy and immunology attending clinics. Residents will participate in attending clinics on Mondays, Tuesdays and Friday. Saturday is optional and per directives from your internal medicine program

First Day Information

  • Leung J, Crowe SE: Food allergy and food intolerance. In: Nutritional Care of the Patient with Gastrointestinal Disease. Buckman A (Ed), Taylor & Francis Group LLC, Boca Raton, FL, 2015: 63-88

  • Relevant uptodate.com chapters

 

International MD elective

Overview
Our goal is to help international medical graduates ease the transition into a U.S. graduate medical education training program and to enhance their competitiveness by offering intensive 3 months of clinical training. Our international medical graduates have the opportunity to learn alongside US medical students, residents, fellows and faculty before applying to graduate medical education programs.

Target Audience

  • International medical graduates who wish to become acculturated into the U.S. medical system in order to enhance competitiveness for a U.S. graduate medical education training program.

  • Physicians who wish to return to active clinical medicine after an extended leave.

  • Physicians who wish to enhance their focus or area of interest and need a primary medical update.

  • Physicians who wish to enhance their clinical skills



Goals and Objectives

OVERALL EDUCATIONAL GOAL:
The purpose of this course is to introduce the international scholars to US healthcare system

OBJECTIVES:

  • Become proficient in using electronic medical records.

  • Have an opportunity to attend grand rounds and conferences in Boston.

  • Be familiar with medical terminology and medications used in the US.

  • Understand how insurance and billing work in the US.

  • Learn how to do effective literature search with various databases, e.g. UpToDate, PubMed etc.

  • Get a broad overview of clinical trials and research.


EVALUATION:
Participant’s performance is evaluated by direct faculty assessment during clinical activities, including oral presentations, written notes, evidence of outside reading, and professionalism. Punctuality is very important at BFAC. At the end of the course, we write a final letter stating your accomplishments. Often, trainees taking our course have this letter sent to the Electronic Residency Application Service (ERAS).
How to apply We offer limited training positions for international medical graduates every year. Only very competitive candidates are encouraged to apply. We do not usually offer position to candidates with a Step 1 score lower than 250 or who cannot commit at least 3 months for the training. You are encouraged to apply if you meet the following criteria:

  • Graduated from medical school within the past 5 years.

  • Must be fluent in the English language to ensure proper communication with patients.

  • Step 1 score high than 250.

  • Must be able to obtain a valid B-1 visa.

  • Willing to commit for 3 months.

We accept applications on a rolling basis. Please submit the following materials to our coordinator (admin@bfac.org) more than two months before your intended start date:

  • Completed Application Form

  • Curriculum Vitae

  • Latest medical school transcript

  • USMLE Step 1 report

  • Vaccination records: Positive titer serology for Measles, Rubella, and Hepatitis B, and negative PPD

  • Health Insurance Policy

  • Copy of biographic page of passport and visa (passport must be valid beyond six months)

Dietetic Interns Training Objectives

First Day Information
The intern should contact us at least 2 days prior to starting the rotation to review the intern's career goals, days off during the rotation, and other considerations.

Expectations
The intern will be expected to directly participate in attending clinics through H&Ps, oral presentations and case discussion, and documentation.

Goals and Objectives

OVERALL EDUCATIONAL GOAL:
The purpose of the elective is to introduce the interns to the field of food allergy & intolerance. Interns will learn to recognize and manage a broad array of food associated allergy and gastrointestinal disorders.

OBJECTIVES:
Demonstrate competence in the recognition and basic management of:

  • Atopic dermatitis with food as trigger

  • Eosinophilic esophagitis and eosinophilic gastrointestinal disorders

  • Food allergies

  • Food intolerance

  • Irritable bowel syndrome

Describe indications for the following studies as well as the basics of interpreting them:

  • Skin prick testing

  • Serum IgE testing

  • Oral food challenges

  • Hydrogen breath testing

Understand the basic pharmacology and dietary therapy:

  • Antihistamines

  • Epinephrine

  • Empirical elimination diet

  • Low FODMAP diet


EVALUATION:
Intern performance is evaluated by direct faculty assessment during clinical activities including oral presentations, written notes, evidence of outside reading, and professionalism. Punctuality is very important at BFAC. An evaluation is completed at the end of the rotation by Dr. Leung and will be sent back to your program. Intern will be evaluated by staff and patients at BFAC as well.

LEARNING ACTIVITIES OF THE ROTATION:
The principle learning activity of interns involves the assessment of patients in outpatient food allergy and intolerance clinic. Residents will participate in attending clinics on Mondays, Tuesdays and Friday. Saturday is optional and per directives from your program.

First Day Information

  • Leung J, Crowe SE: Food allergy and food intolerance. In: Nutritional Care of the Patient with Gastrointestinal Disease. Buckman A (Ed), Taylor & Francis Group LLC, Boca Raton, FL, 2015: 63-88

  • Relevant uptodate.com chapters

 

Volunteer

Dr. Leung offers a wide variety of opportunities for people interested in the medical field. We are open on Saturdays which provides more flexibility for students who take classes during the week. For more information on volunteering, email us at: admin@bfac.org

Clinical Trial

Funding Agent Title Status
Regeneron Pharmaceuticals A phase 3, Randomized, 3-part study to investigate the efficacy and safety of Dupilumab in adult and adolescent patients with Eosinophilic Esophagitis Set to enroll adult and adolescent patients with EoE
Shire Inc. A Phase 3, Multicenter, Open-label Continuation Study with Budesonide Oral Suspension (BOS) for Adolescent and Adult Subjects with Eosinophilic Esophagitis (EoE) Enrolling those who have completed SHP621-302 study
Allakos, Inc. An Extension Study of AK002 in Patients With Eosinophilic Gastritis and/or Eosinophilic Gastroenteritis. Enrolling those who have completed AK002-003 study
National Institute of Health (NIH) A Prospective, Multicenter Study to Compare and Validate Endoscopic, Histologic, Molecular, and Patient-Reported Outcomes in Pediatric and Adult Patients with Eosinophilic Esophagitis (EoE), Gastritis (EG) and Colitis (EC) Closed to enrollment
National Institute of Health (NIH) Six Food vs One Food Eosinophilic Esophagitis Elimination Diet (SOFEED) followed by Swallowed Glucocorticoid Trial Closed to enrollment
Merck Sharp & Dohme Corp A Phase III, Randomized, Placebo-Controlled Clinical Trial to Study the Efficacy and Safety of MK-3641, a Ragweed (Ambrosia artemisiifolia) Sublingual Immunotherapy Tablet, in Children With a History of Ragweed-Induced Rhinoconjunctivitis With or Without Asthma Closed to enrollment
Shire Inc. Oral Budesonide Suspension (OBS) in Adolescent and Adult Subjects
(11 to 55 Years of Age, Inclusive) with Eosinophilic Esophagitis:
A Phase 3 Randomized, Double-blind, Placebo-controlled Study		 Closed to enrollment
Adare Pharmaceuticals FLUTicasone in Eosinophilic esophagitis (FLUTE) A Randomized, Double-blind, Placebo-controlled, Dose-ranging, and Maintenance Study of APT-1011 in Subjects with Eosinophilic Esophagitis Closed to enrollment
Allakos, Inc. A Phase 2 Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy, Safety, Tolerability, and Pharmacodynamic Effect of AK002 in Patients with Eosinophilic Gastritis with or without Eosinophilic Gastroenteritis Closed to enrollment
Shire Inc. An Extension Study to Evaluate Maintenance of Efficacy and Long-term Treatment Effect of Oral Budesonide Suspension (OBS) in Adults and Adolescents with Eosinophilic Esophagitis (EoE). Closed to enrollment

Publication

 

Publication

  • Brown T., Leung J. Tolerance of Baked Cheese in Cow’s Milk Mediated Eosinophilic Esophagitis: A Novel Clinical Observation. ACG Case Reports Journal, 2019;6:e00217.

  • Schoepfer AM, Hirano I, Coslovsky M, Roumet M.C., Zwahlen M, Kuehni C.E., Hafner D, Alexander J.A., Dellon E.S., Gonsalves N, Leung J., Bussmann C., Collins M.H., Newbury R.O., Smyrk T.C., Woosley J.T., Yang G., Romero Y, Katzka D.A., Furuta G.T., Gupta S.K., Aceves S.S., Chehade M., Spergel J.M., Falk G.W., Meltzer B.A., Comer G.M., Straumann A., Safroneeva E. Variation in Endoscopic Activity Assessment and Endoscopy Score Validation in Adults With Eosinophilic Esophagitis. Clinical Gastroenterology and Hepatology 2019;17:1477-1488.e10.

  • Aceves SS, King E, Collins MH, Yang G, Capocelli KE, Abonia JP, Atkins D, Bonis PA, Carpenter CL, Dellon ES, Eby MD, Falk GW, Gonsalves M, Gupta SK, Hirano I, Kocher K, Krischer JP, Leung J, Lipscomb J, Menard-Katcher P, Mukkado VA, Pan Z, Spergel JM, Sun Q, Wershil BK, Rothenberg ME, Furuta GT. Alignment of parent- and child-reported outcomes and histology in eosinophilic esophagitis across multiple CEGIR sites. Journal of Allergy and Clinical Immunology. 2018; 142(1):130-138.

  • Zhan T, Ali A, Choi JG, Lee M, Leung J, Dellon ES, Garber JJ,Hur C. Model to Determine the Optimal Dietary Elimination Strategy for Treatment of Eosinophilic Esophagitis. Clin Gastroenterol Hepatol 2018;16:1730-1737.e2

  • Shoda T, Wen T, Aceves SS, Abonia JP, Atkins D, Bonis PA, Caldwell JM, Capocelli KE, Carpenter CL, Collins MH, Dellon ES, Eby MD, Gonsalves N, Gupta SK, Falk GW, Hirano I, Menard-Katcher P, Kuhl JT, Krischer JP, Leung J, Mukkada VA, Spergel JM, Trimarchi MP, Yang GY, Zimmermann N, Furuta GT, Rothenberg ME . Eosinophilic Esophagitis Endotype Classification by Molecular, Clinical, and Histopathological Analyses: A Cross Sectional Study. Lancet Gastroenterol Hepatol 2018;3:477–488.

  • Cheng K, Gupta SK, Kantor S, Kuhl JT, Aceves SS, Bonis PA, Capocelli KE, Carpenter C, Chehadei M, Collins MH, Dellon ES, Falk GW, Gopal-Srivastava R, Gonsalves N, Hirano I, King EC, Leung J, Krischer JP, Mukkada VA, Schoepfer A, Spergel JM, Straumann A, Yang GY, Furuta GT, Rothenberg ME. Creating a multi-center rare disease consortium – the Consortium of Eosinophilic Gastrointestinal Disease Researchers (CEGIR). Translational Science of Rare Diseases. 2017; 2(3-4): 141-155.

  • Dellon, E.S., Katzka, D.A., Collins, M.H., Hamdani, M., Gupta, S.K., Hirano, I., Kagalwalla A, Lewis J, Markowitz J, Nurko S, Wo J, Dellon E, Gunasekaran TS, Hirano I, Gupta S, Pasternak B, Ellis M, Peterson K, Falk G, Leung J, Prestridge L, Hart M, Leleiko N, Vaezi M, Cherry R, Katzka D, FriedenbergK, Assouline-Dayan Y, Mukkada V, 2017. Budesonide Oral Suspension Improves Symptomatic, Endoscopic, and Histologic Parameters Compared With Placebo in Patients With Eosinophilic Esophagitis. Gastroenterology 2017; 152(4): 776–786.e5.

  • DellonES, Collins MH,  Bonis PA,  Leung J, Capocelli KE, Dohil R, Falk GW, Furuta GT, Menard-Katcher C, Gupta SK, Hirano I, Hiremath GS, Kagalwalla AF, Wershil BK, Liacouras CA, Muir AB, Mukkada VA, Putnam PE, Schoepfer AM, Straumann A, Wo JM, Yang GY, Rothenberg ME, Gonsalves N. Substantial Variability in Biopsy Practice Patterns Among Gastroenterologists for Suspected Eosinophilic Gastrointestinal Disorders. Clin. Gastroenterol. Hepatol. 2016;14:1842–1844

  • Safroneeva E, Straumann A, Coslovsky M, Zwahlen M, Kuehni CE, Panczak R, Haas NA, Alexander JA, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussmann C, Collins MH, Newbury RO, De Petris G, Smyrk TC, Woosley JT, Yan P, Yang GY, Romero Y, Katzka DA, Furuta GT, Gupta SK, Aceves SS, Chehade M, Spergel JM, Schoepfer AM; International Eosinophilic Esophagitis Activity Index Study Group. Symptoms Have Modest Accuracy in Detecting Endoscopic and Histologic Remission in Adults With Eosinophilic Esophagitis.Gastroenterology. 2016 Mar;150(3):581-590

  • Witkin, A.J., Shah, A.R., Engstrom, R.E., Kron-Gray, M.M., Baumal, C.R., Johnson, M.W., Witkin, D.I., Leung, J., Albini, T.A., Moshfeghi, A.A., Batlle, I.R., Sobrin, L., Eliott, D., Postoperative Hemorrhagic Occlusive Retinal Vasculitis, Expanding the Clinical Spectrum and Possible Association with Vancomycin. Ophthalmology 2015 122, 1438–1451.

  • Leung, J., Mehrzad, R., Hundal, N.V., Alejos, A., Hesterberg, P.E., Katz, A.J., Yuan, Q., ShrefflerW.G. Longitudinal Perspective on Managing Refractory Eosinophilic Esophagitis. J. Allergy Clin. Immunol. Pract. 2015; 3, 951–956.

  • Kliewer KL, Venter C, Cassin AM,  Abonia JP ,  Aceves SS ,  Bonis PA ,  Dellon ES , Falk GW,  FurutaGT Gonsalves N, Gupta SK, Hirano I,  Kagalwalla A , Leung J,  Mukkada VA ,  Spergel JM , Rothenberg ME. Should wheat, barley, rye, and/or gluten be avoided in a 6-food elimination diet? J. Allergy Clin. Immunol. 2016;137:1011–1014.

  • Leung J, Beukema KR, Shen AH. Allergic mechanisms of Eosinophilicoesophagitis. Best Pract. Res. Clin. Gastroenterol. 2015 Oct;29(5):709–720.

  • Safroneeva E, Coslovsky M, Kuehni CE, Zwahlen M, Haas NA,  Panczak R , Taft TH, Hirano I,  Dellon ES ,  Gonsalves N , Leung J,  Bussmann C ,  Woosley JT , Yan P, Romero Y,  Furuta GT , Gupta SK,  Aceves SS ,  Chehade M ,  Straumann A ,  Schoepfer AM ; International EEsAI Study Group. Eosinophilicoesophagitis: relationship of quality of life with clinical, endoscopic and histological activity. Aliment. Pharmacol. Ther. 2015;42:1000–1010.

  • 1. Schoepfer AM, Hirano I, Coslovsky M, Roumet M.C., Zwahlen M, Kuehni C.E., Hafner D, Alexander J.A., Dellon E.S., Gonsalves N, Leung J., Bussmann C., Collins M.H., Newbury R.O., Smyrk T.C., Woosley J.T., Yang G., Romero Y, Katzka D.A., Furuta G.T., Gupta S.K., Aceves S.S., Chehade M., Spergel J.M., Falk G.W., Meltzer B.A., Comer G.M., Straumann A., Safroneeva E. Variation in Endoscopic Activity Assessment and Endoscopy Score Validation in Adults With Eosinophilic Esophagitis. Clinical Gastroenterology and Hepatology 2019;17:1477-1488.e10.

  • 2. Aceves SS, King E, Collins MH, Yang G, Capocelli KE, Abonia JP, Atkins D, Bonis PA, Carpenter CL, Dellon ES, Eby MD, Falk GW, Gonsalves M, Gupta SK, Hirano I, Kocher K, Krischer JP, Leung J, Lipscomb J, Menard-Katcher P, Mukkado VA, Pan Z, Spergel JM, Sun Q, Wershil BK, Rothenberg ME, Furuta GT. Alignment of parent- and child-reported outcomes and histology in eosinophilic esophagitis across multiple CEGIR sites. Journal of Allergy and Clinical Immunology. 2018; 142(1):130-138.

  • 3. Zhan T, Ali A, Choi JG, Lee M, Leung J, Dellon ES, Garber JJ, Hur C. Model to Determine the Optimal Dietary Elimination Strategy for Treatment of Eosinophilic Esophagitis. Clinical Gastroenterology and Hepatology: The Official Clinical Practice Journal of the American Gastroenterological Association, May 3, 2018. https://doi.org/10.1016/j.cgh.2018.04.013.

  • 4. Shoda T, Wen T, Aceves SS, Abonia JP, Atkins D, Bonis PA, Caldwell JM, Capocelli KE, Carpenter CL, Collins MH, Dellon ES, Eby MD, Gonsalves N, Gupta SK, Falk GW, Hirano I, Menard-Katcher P, Kuhl JT, Krischer JP, Leung J, Mukkada VA, Spergel JM, Trimarchi MP, Yang GY, Zimmermann N, Furuta GT, Rothenberg ME . Eosinophilic Esophagitis Endotype Classification by Molecular, Clinical, and Histopathological Analyses: A Cross Sectional Study. Lancet Gastroenterol Hepatol, 2018. http://dx.doi.org/10.1016/ S2468-1253(18)30096-7.

  • 5. Cheng K, Gupta SK, Kantor S, Kuhl JT, Aceves SS, Bonis PA, Capocelli KE, Carpenter C, Chehadei M, Collins MH, Dellon ES, Falk GW, Gopal-Srivastava R, Gonsalves N, Hirano I, King EC, Leung J, Krischer JP, Mukkada VA, Schoepfer A, Spergel JM, Straumann A, Yang GY, Furuta GT, Rothenberg ME. Creating a multi-center rare disease consortium – the Consortium of Eosinophilic Gastrointestinal Disease Researchers (CEGIR). Translational Science of Rare Diseases. 2017; 2(3-4): 141-155.

  • 6. Dellon, E.S., Katzka, D.A., Collins, M.H., Hamdani, M., Gupta, S.K., Hirano, I., Kagalwalla A, Lewis J, Markowitz J, Nurko S, Wo J, Dellon E, Gunasekaran TS, Hirano I, Gupta S, Pasternak B, Ellis M, Peterson K, Falk G, Leung J, Prestridge L, Hart M, Leleiko N, Vaezi M, Cherry R, Katzka D, Friedenberg K, Assouline-Dayan Y, Mukkada V, 2017. Budesonide Oral Suspension Improves Symptomatic, Endoscopic, and Histologic Parameters Compared With Placebo in Patients With Eosinophilic Esophagitis. Gastroenterology 2017; 152(4): 776–786.e5.

  • 7. Dellon ES, Collins MH, Bonis PA, Leung J, Capocelli KE, Dohil R, Falk GW, Furuta GT, Menard-Katcher C, Gupta SK, Hirano I, Hiremath GS, Kagalwalla AF, Wershil BK, Liacouras CA, Muir AB, Mukkada VA, Putnam PE, Schoepfer AM, Straumann A, Wo JM, Yang GY, Rothenberg ME, Gonsalves N. Substantial Variability in Biopsy Practice Patterns Among Gastroenterologists for Suspected Eosinophilic Gastrointestinal Disorders. Clin. Gastroenterol. Hepatol. 2016;14:1842–1844

  • 8. Safroneeva E, Straumann A, Coslovsky M, Zwahlen M, Kuehni CE, Panczak R, Haas NA, Alexander JA, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussmann C, Collins MH, Newbury RO, De Petris G, Smyrk TC, Woosley JT, Yan P, Yang GY, Romero Y, Katzka DA, Furuta GT, Gupta SK, Aceves SS, Chehade M, Spergel JM, Schoepfer AM; International Eosinophilic Esophagitis Activity Index Study Group. Symptoms Have Modest Accuracy in Detecting Endoscopic and Histologic Remission in Adults With Eosinophilic Esophagitis. Gastroenterology. 2016 Mar;150(3):581-590

  • 9. Witkin, A.J., Shah, A.R., Engstrom, R.E., Kron-Gray, M.M., Baumal, C.R., Johnson, M.W., Witkin, D.I., Leung, J., Albini, T.A., Moshfeghi, A.A., Batlle, I.R., Sobrin, L., Eliott, D., Postoperative Hemorrhagic Occlusive Retinal Vasculitis, Expanding the Clinical Spectrum and Possible Association with Vancomycin. Ophthalmology 2015 122, 1438–1451.

  • 10. Leung, J., Mehrzad, R., Hundal, N.V., Alejos, A., Hesterberg, P.E., Katz, A.J., Yuan, Q., Shreffler W.G. Longitudinal Perspective on Managing Refractory Eosinophilic Esophagitis. J. Allergy Clin. Immunol. Pract. 2015; 3, 951–956.

  • 11. Kliewer KL, Venter C, Cassin AM, Abonia JP, Aceves SS, Bonis PA, Dellon ES, Falk GW, FurutaGT Gonsalves N, Gupta SK, Hirano I, Kagalwalla A, Leung J, Mukkada VA, Spergel JM, Rothenberg ME. Should wheat, barley, rye, and/or gluten be avoided in a 6-food elimination diet? J. Allergy Clin. Immunol. 2016;137:1011–1014.

  • 12. Leung J, Beukema KR, Shen AH. Allergic mechanisms of Eosinophilicoesophagitis. Best Pract. Res. Clin. Gastroenterol. 2015 Oct; 29(5):709–720.

  • 13. Safroneeva E, Coslovsky M, Kuehni CE, Zwahlen M, Haas NA, Panczak R, Taft TH, Hirano I, Dellon ES, Gonsalves N, Leung J, Bussmann C, Woosley JT, Yan P, Romero Y, Furuta GT, Gupta SK, Aceves SS, Chehade M, Straumann A, Schoepfer AM; International EEsAI Study Group. Eosinophilicoesophagitis: relationship of quality of life with clinical, endoscopic and histological activity. Aliment. Pharmacol. Ther. 2015;42:1000–1010.

  • 14. Schoepfer AM, Panczak R, Zwahlen M, Kuehni CE, Coslovsky M, Maurer E, Haas NA, Alexander JA, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussmann C, Collins MH, Newbury RO, De Petris G, Smyrk TC, Woosley JT, Yan P, Yang GY, Romero Y, Katzka DA, Furuta GT, Gupta SK, Aceves SS, Chehade M, Blanchard C, Straumann A, Safroneeva E; International EEsAI Study Group. How do gastroenterologists assess overall activity of eosinophilic esophagitis in adult patients? Am. J. Gastroenterol. 2015;110:402–414.

  • 15. Schoepfer AM, Straumann A, Panczak R, Kuehni CE, Romero Y, Maurer E, Alexander JA, Hirano I, Gonsalves N, MD, Furuta GT, Dellon ES, Leung J, Moawad FJ, Collins MH, Bussmann C, Netzer P, Zwahlen M, Safroneeva E. International EEsAI Study Group. Development and validation of a symptom-based activity index for adults with eosinophilic esophagitis. Gastroenterology 2014: 147(6): 1255–1266.e21

  • 16. Kang D, Schlachter SC, Carruth RW, Kim M, Wu T, Tabatabaei N, Vacas-Jacques P, Shishkov M, Woods K, Sauk JS, Leung J, Nishioka NS, Tearney GJ. Comprehensive confocalendomicroscopy of the esophagus in vivo. Endosc Int. Open 2014 Jul 16;2(03):E135–40

  • 17. Tabatabaei N, Kang D, Wu T, Kim M, Carruth RW, Leung J, Sauk JS, Shreffler W, Yuan Q, Katz A, Nishioka NS, Tearney GJ. Tethered confocal endomicroscopy capsule for diagnosis and monitoring of eosinophilic esophagitis. Biomed. Opt. Express 2013;5:197–207

  • 18. Leung J, Katz AJ, Shreffler WG, Yuan Q, Hundal N, Butterworth CA. Tolerance of Baked Milk in Patients with Cow's Milk-mediated Eosinophilic Esophagitis. J Allergy Clin Immunol.2013;132:1215–1216.e1.

  • 19. Leung J, Guyer A, Banerji A. IgE-mediated hypersensitivity to ondansetron and safe use of palonosetron. J Allergy ClinImmuno. Pr. 2013: 1(5); 536-537

  • 20. Islam SA, Ling MF, Leung J, Shreffler WG, Luster AD. Identification of human CCR8 as a CCL18 receptor. J Exp Med. 2013 Sep 23;210(10):1889-98

  • 21. Leung J, Nguyen-Traxler A, Lee EM, Yip JS, Weinstock JV, Chan WW, Ngo P, Weinstein, BJ, BonisPA.Assessment of fractionated exhaled nitric oxide as a biomarker for the treatment of eosinophilic esophagitis. Allergy Asthma Proc. 2012. 33(6): 519-24.

  • 22. Blum AM, Hang L, Setiawan T, Urban JP Jr, Stoyanoff KM, Leung J, Weinstock JV.Heligmosomoidespolygyrusbakeri Induces Tolerogenic Dendritic Cells that Block Colitis and Prevent Antigen-Specific Gut T Cell Responses. J. Immunol. 2012 Sep 1; 189 (5):2512-20.

  • 23. Leung J, Hang L, Blum A, Setiawan T, Stoyanoff K, Weinstock JV. HeligmosomoidesPolygyrus Abrogates Antigen-Specific Gut Injury in a Murine Model of Inflammatory Bowel Disease. Inflamm. Bowel Dis. 2012; 18:1447–1455.

  • 24. Levy AN, Rahaman SM, Bonis PA, Javid G, Leung J. Hiccups as a Presenting Symptom of Eosinophilic Esophagitis. Case Reports in Gastroenterology 2012; 6:340-343.

  • 25. Leung J, Bonis PA, Kaplan MM. Colchicine PlusUrsodiolVersus Methotrexate Plus Ursodiol in the Treatment of Primary Biliary Cirrhosis: Twenty-Year Follow-Up.ClinGastroenterolHepatol. 2011;9(9):776-780.

  • 26. Bonder A, Retana A, Winston DM, Leung J,Kaplan MM. Prevalence of primary biliary cirrhosis-autoimmune hepatitis overlap syndrome.ClinGastroenterolHepatol. 2011;9(7):609-612.

  • 27. Leung J, Dowling L, Obadan I, Davis J, Bonis PA, Kaplan MM, Casey D, Viveiros K. Risk of Non-Melanoma Skin Cancer in Autoimmune Hepatitis. Dig Dis Sci. 2010;55(11):3218-3223.

  • 28. Beinborn M, Blum A, Hang L, Setiawan T, Schroeder JC, Leung J, Weinstock JV. TGF-β regulates T-cell neurokinin-1 receptor internalization and function. ProcNatlAcadSci U S A. 2010;107(9):4293-4298.

  • 29. Leung, J, Sasson M, Patel SR, Viveiros K. Clostridium cadaveris intra-peritoneal abscess.Am J Gastroenterol. 2009 Oct;104(10):2635-6

  • 30. Leung J, Silverman W. Diagnostic and Therapeutic Approach to Pancreatic Cancer-Associated Gastroparesis: Literature Review and Our Experience. Dig Dis Sci. 2009 Feb;54(2):401-5

  • 31. Leung J, Patel S, Lang TU, Vozick J, Hadley S, Weinstein B, Olans L. Bleeding colonic ulcers due to invasive mold infection. Am J Gastroenterol. 2008 Nov;103(11):2960-1

  • 32. Elliott DE, Metwali A, Leung J, Setiawan T, Blum AM, Ince MN, Bazzone LE, Stadecker MJ, Urban JF Jr, Weinstock JV. Colonization with helminths suppresses mucosal IL17 production. J. Immunol. 2008 Aug 15;181(4):2414-9

  • 33. Higgins, P. D. R., J. Leung, M. Schwartz, J. Mapili, P. A. Wren, and E. M. Zimmermann. “The Quantitative Validation of Non-Endoscopic Disease Activity Indices in Ulcerative Colitis.” Alimentary Pharmacology & Therapeutics 25, no. 3 2007 Feb, 333–42.

  • 34. Higgins PD, Mapili J, Krokos I, Schwartz M, Leung J, Zimmermann EM. Patient-defined dichotomous endpoints for remission and for clinical information in Ulcerative Colitis. Gut. 2005 Jun; 54(6):782-8.

  • 35. Xie L, Metallo C, Warren J, Pilbrough W, Peitier J, Zhong T, Pikus L, Amanda Y, Leung J, Aunins J, Zhou W. Large-scale propagation of a replication-defective adenovirus vector in stirred-tank bioreactor PER.C6 cell culture under sparging conditions. Biotechnology and Bioengineering. 2003 Jul, 83(1): 43-52.

  • 36. Xie L, Pilbrough W, Metallo C, Zhong T, Pikus L, Leung J, Aunins J, Zhou W. Serum-free Suspension Cultivation of PER.C6 Cells and Recombinant Adenovirus Production under Different pH Conditions. Biotechnology and Bioengineering. 2002 Dec, 80(5): 569-579.

  • 37. Goerke A, Leung J, Wickramasinghe SR. Mass and momentum transfer in blood oxygenators. Chemical Engineering Science. 2002 Jun, 57: 2035-2046.

Textbook Contribution

  • 1. Leung J, Dadlani A, Crowe S. Food Allergies, Food Intolerances and Carbohydrate Malabsorption. In: Essential medical disorders of the Stomach and Small Intestine A Case-Based Approach to Diagnosis and Treatment. Lacy BE, DiBaise JK, Pimental M, Ford AC (Eds), Springer International Publishing AG

  • 2. Venkataraman S, Shen AH, Wilkinson R, Leung J. “Food Allergies and Sensitivities.” In: Robinson MK, editor. Scientific American Nutrition [online]. Hamilton (ON): Decker Intellectual Properties. [In Press].

  • 3. Keo T, Leung J, Weinstock JV: Helminthic Infections of the Gastrointestinal Tract and Liver In: Atlas of Gastroenterology 5th Edition. Podolsky DK, Camilleri M, Fitz JG, Kalloo AN, Shanahan F, Wang TC (Eds), John Wiley & Sons, Malden, MA 02148, 2016: 524-543.

  • 4. Keo T, Leung J, Weinstock JV: Parasitic diseases: Helminthic Infections of the Gastrointestinal Tract and Liver In: Textbook of Gastroenterology 6th Edition, Volume Two. Podolsky DK, Camilleri M, Fitz JG, Kalloo AN, Shanahan F, Wang TC (Eds), John Wiley & Sons, Malden, MA 02148, 2015: 2337-2377.

  • 5. Leung J, Crowe SE: Food allergy and food intolerance. In: Nutritional Care of the Patient with Gastrointestinal Disease. Buckman A (Ed),Taylor& Francis Group LLC, Boca Raton, FL, 2015: 63-88.

  • 6. Leung J, Crowe SE: Food allergies. In The Health Professional’s Guide to Gastrointestinal Nutrition. Mullin G, Matarese L (Eds), Academy of Nutrition and Dietetics, Chicago, IL, 2014.

  • 7. Leung, J., Crowe S.E: Food Allergy and Food Intolerance. In:World Review of Nutrition and Dietetics. Bier DM, Mann J, Alpers DH (Eds), Karger AG- Medical and Scientific Publishers, Basel, Switzerland, 2014(111):76–81.

  • 8. Leung J, Weinstock JV: Worms – light at the end of their burrow? In: Clinical Dilemmas in Inflammatory Bowel Disease: New Challenges, 2nd Edition. Irving P, Siegel C, Rampton D, Shanahan F (Eds), Wiley Blackwell Publications, Malden, MA, 20148, 2011.

  • 9. Leung J, S Crowe SE: Food intolerance and food allergy. In: The Gastrointestinal and Liver Disease Nutrition Desk Reference, Mullin GE, Matarese L, Palmer M (Eds), Taylor & Francis Group LLC, Boca Raton, FL, 2011:65-80.

  • 10. Leung J, O’Rourke RW, Hunter JG, et al. Barrett’s Esophagus with High-Grade Dysplasia. In: MD CEHS-C, ed. The SAGES Manual of Strategic Decision Making. Springer New York; 2008:141–154.

Abstract

  1. Gupta S, Pesek R, Aceves S, Wang Y, Foss K, Bonis P, Chehade M, Collins M, Dellon E, Falk G, Gonsalves N, Hirano I, Leung J, Katzka D, Krischer J, Menard-Karcher P, Mukkada V, Spergel J, Wershil B, Rothenberg M, Furuta G and CEGIR Investigators Group. Patient characteristics from multi-center longitudinal cohort of eosinophilic gastrointestinal disorders may inform future studies. WCPGHAN, Copenhagen, Denmark, 2020.

  2. Rothenberg ME, Peterson KA, Murray JA, Falk GW, Hirano I, Gonsalves N, Chehade M, Leung J, Genta RM, Khoury P, Bledsoe AC, Shaw C, Rasmussen HS, Singh B, Chang AT, Kamboj AP, Dellon ES. AK002, an Anti-Siglec-8 Monoclonal Antibody, Significantly Improves Symptoms in Patients with Eosinophilic Gastritis and/or Eosinophilic Gastroenteritis. American Acadamy of Allergy Asthma & Immunology Annual Meeting, Philadelphia, PA, 2020.

  3. Hirano I, Peterson KA, Murray JA, Dellon ES, Falk GW, Gonsalves N, Chehade M, Leung J, Genta RM, Khoury P, Bledsoe AC, Shaw C, Rasmussen HS, Singh B, Chang AT, Kamboj AP, Rothenberg ME. AK002, an Anti-Siglec-8 Antibody, Depletes Tissue Eosinophils and Improves Dysphagia Symptoms in Patients with Eosinophilic Esophagitis. American Academy of Allergy Asthma & Immunology Annual Meeting, Philadelphia, PA 2020.

  4. Jensen ET, Abonia JP, Aceves SS, Bonis PA, Bray K, Book W, Chehade M, Collins MH, Dellon ES, Falk GW, GonsalvesN, Gupta SK, Hirano I, Katzka DA, Kyle S, Mack D, Kodroff E, Leung J, Mukkada VA, Reidy C, Paliana A, Sable K, Scott M, Spergel J, Strobel MJ, Krischer J, Furuta G, Rothenberg ME.  Eosinophilic gastrointestinal disease treatment approaches are associated with frequency of feelings of isolation. Digestive Disease Week, San Diego, CA, 2019. 

  5. Jensen ET, Abonia JP, Aceves SS, Bonis PA, Bray K, Book W, Chehade M, Collins MH, Dellon ES, Falk GW, GonsalvesN, Gupta SK, Hirano I, Katzka DA, Kyle S, Mack D, Kodroff E, Leung J, Mukkada VA, Reidy C, Paliana A, Sable K, Scott M, Spergel J, Strobel MJ, Krischer J, Furuta G, Rothenberg ME. Vitamin deficiencies may vary in relation to symptoms and treatment approaches for Eosinophilic Esophagitis. Digestive Disease Week, San Diego, CA, 2019. 

  6. Dunn JLM, Shoda T, Wen T, Aceves SS, Abonia JP, Atkins D, Bonis PA, Caldwell JM, Capocelli KE, Carpenter CL, Collins MH, Dellon ES, Eby MD, Gonsalves N,  Gupta SK, Falk FW, Hirano I, Mendard-Katcher P, Kuhl JT, Krischer JP, Leung J, Mukkada VA, Spergel JM, Trimarchi MP, Yang GY, Zimmerman N, Furuta GT, Rothenberg ME. Cytokine Expression Illustrates Heterogeneity of Active Eosinophilic Esophagitis In a Large Multi-Site Cohort. Digestive Disease Week, San Diego, CA, 2019. 

  7. Hirano I, Collins M, King E, Sun Q, Abonia JP, Bonis PA, Chehade M, Dellson ES, Galk GW, Gonsalves N, Gupta SK, Leung J, Katzka D, Menard-Katcher P, Klion Amy, Mukkada VA, Peterson K, Shoda Tetsuo, Spergel JA, Yang GY, Rothenberg ME, Aceves SS, Furuta GT, CEGIR Investigators. Prospective Evaluation of Novel Endoscopic Activity Assessment System for Eosinophilic Gastritis. Digestive Disease Week, San Diego, CA, 2019.  

  8. Shoda T, Wen T, Caldwell JM, Collins MH, Abonia JP, Bonis PA, Chehade M, Dellon ES, Falk GW, Consalves N, Gupta SK, Hirano I, Leung J, Katzka D, Menard-Katcher P, Klion A, Mukkada VA, Peterson K, Spergel JA, Yang GY, Aceves SS, Furuta GT, Rothenberg ME, CEGIR Investigators. Development of Eosinophilic Gastritis Molecular Diagnostic Panel. Digestive Disease Week, San Diego, CA, 2019.  

  9. Jensen ET, Abonia PJ, Aceves SS, Bonis P, Bray K, Book W, Chehade M, Collins M, Dellon ES, Falk G, Furuta G, Gonsalves N, Gupta SK, Hirano I, Hiremath G, Katzka D, Klion A, Kodroff E, Leung J, Mernard-Katcher P, Mukkada V, Peterson K, Reidy C, Rothenberg M, Scott M, Spergel J, Strobel MJ, Yang GY. High patient-reported disease burden for eosinophilic gastrointestinal disorders. Digestive Disease Week, San Diego, CA, 2019.   

  10. Leung J, Sawalha K, Alshammari A, Eman P, Ganta A. Video-based training on proper EpiPen(Jr) administration and food allergy knowledge among Chinese, Spanish, and English populations in Boston. Eastern Allergy Conference, Palm Beach, FL, 2017

  11. Kliewer K, Aceves S, Atkins D, Chehade M, Dellon E, Gupta S, Kagalwalla A, Leung J, Mir S, Mukkada V, Pesek R, Spergel J, Wechsler J, Rothernberg M. Child vs Parent Perceptions of Symptoms and Quality of Life in Eosinophilic Esophagitis. CURED Research Conference, Cincinnati, OH, 2017.

  12. Beukema KR, Leung J, Virkud Y, Shen AH, Patil SU, Ramakrishna J, Schreffler WG. Patients from low-income families referred for oral food challenge were more likely to pass. AAAAI Annual Meeting, Los Angeles, CA, 2016.

  13. Safroneeva E, Chehade M, Gupta SK, Kuehni CE, Zwahlen M, Coslovsky M, Haas NA, Hirano I, Bussman C, Romero Y, Leung J, Newbury R, Panczak R. Caregiver-assessed EoE activity in children between 3-9 years of age poorly correlates with physician global assessment, endoscopic or histologic activity. Digestive Disease Week, San Diego, CA, 2016.

  14. Schoepfer AM, Safroneeva E, Hirano I, Coslovsky M, Kuehni CE, Zwahlen M, Haas NA, Panczak R, Dellon ES, Gonsalves N, Leung J, Bussmann C, Romero Y, Alexander JA, Furuta GT, Gupta SK, Aceves SS, Chehade M, Spergel JM, Straumann A. Development and validation of an endoscopy-based activity index for adults with eosinophilic esophagitis. Digestive Disease Week, San Diego, CA, 2016.

  15. Safroneeva E, Limacher A, Chehade M, Gupta SK, Furuta GT, Kuehni C, Zwahlen M, Trelle S, Alexander J, Coslovsky M, Dellon ES, Gonsalves N, Haas N, Hirano I, Leung J, Bussman C, Collins MH, Newbury R, Panczak R, Smyrk T, Romero Y, Katzka D, Aceves S, Spergel J, Straumann A, Schoepfer A. Parent-assessed EoE activity in children aged 3-9 years does not correlate with physician global assessment, endoscopic and histologic activity. Digestive Disease Week, San Diego, CA, 2016.

  16. Dellon ES, Collins MH, Bonis PA, Capocelli K, Dohil R, Falk GW, Furuta GT, Gupta SK, Hirano I, Hiremath GS, Kagalwalla AF, Leung J, Liacouras CA, Menard-Katcher CD, Muir AB, Mukkada VA, Putnum PE, Schoepfer AM, Straumann A, Wershil BK, Wu JM, Yang GY, Rothenberg ME, Gonsalves N. Substantial variability in biopsy practice patterns among gastroenterologists for suspected eosinophilic gastrointestinal disorders (EGID). Digestive Disease Week, San Diego, CA,2016.

  17. Schoepfer AM, Panczak R, Zwahlen M, Kuehni CE, Coslovsky M, Maurer E, Haas NA, Alexander JA, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussmann C, Collins MH, Newbury RO, De Petris G, Smyrk TC, Woosley JT, Yan P, Yang GY, Romero Y, Katzka DA, Furuta GT, Gupta SK, Aceves SS, Chehade M, Blanchard C, Straumann A, Safroneeva E. How Do Gastroenterologists Assess Overall Activity of Eosinophilic Esophagitis? Digestive Disease Week, Washington, DC. 2015.

  18. Safroneeva E, Coslovsky M, Panczak R, Zwahlen M, Kueni C, Haas N, Alexander JA, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussman C, Collins MH, Newbury R, DePetris G, Smyrk TC, Woosley JT, Yan gGY, Romero Y, Katzka DA, Furuta G, Gupta SK, Aceves S, Chehade M, Straumann A, Schoepfer A. Predicting endoscopic and histologic remission in adult patients with Eosinophilic Esophagitis using the EEsAI PRO score. Digestive Disease Week, Washington, DC. 2015.

  19. Safroneeva E, Coslovsky M, Kuehni C, Panczak R, Zwahlen M, Haas N, Taft T, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussman C, Woosley JT, Yan P, Yang GY, Romero Y, Furuta G, Gupta SK, Aceves S, Chehade M, Straumann A, SchoepferA.Relationship of Quality of Life with Symptom Severity, En

  20. Swenson T, Hundal NV, Chapin C, Elliot C, Leung J, Katz A, Hesterberg P, Shreffler W, Yuan Q. Quality of life for children with eosinophilic esophagitis: a comparisonof patients’ and parents’ perceptions and associated factors using thePedsQLTM 3.0 Eosinophilic Esophagitis Module. Food Allergy and Anaphylaxis Meeting, Dublin, Ireland, 2014.

  21. Schoepfer AM, Straumann A, Panczak R, Kuehni CE, Romero Y, Maurer E, Alexander JA, Hirano I, Gonsalves N, MD, Furuta GT, Dellon ES, Leung J, Moawad FJ, Collins MH, Bussmann C, Netzer P, Gupta S, Chehade M, Moawad F, Aceves S, Wo J, Zwahlen M, Safroneeva E. Development of an endoscopy- and histology-based activity index for eosinophilic esophagitis. UEG Week, Vienna, Austria, 2014.

  22. Schoepfer AM, Straumann A, Panczak R, Kuehni CE, Romero Y, Maurer E, Alexander JA, Hirano I, Gonsalves N, MD, Furuta GT, Dellon ES, Leung J, Moawad FJ, Collins MH, Bussmann C, Netzer P, Gupta S, Chehade M, Moawad F, Aceves S, Wo J, Zwahlen M, Safroneeva E. Development of a symptom-based activity index for eosinophilic esophagitis. UEG Week, Vienna, Austria, 2014.

  23. Mehrzad R, Katz AJ, Yuan Q, Hesterberg PE, Shreffler WG, Alejos AR, Fiore J, Leung J. Safety of Serial Endoscopies in Patients with Eosinophilic Esophagitis Undergoing Dietary Therapy: Our own experience and a literature review. Digestive Disease Week, Chicago, IL, 2014.

  24. Leung J,Mehrzad R, Alejos A, Hesterberg PE, Yuan Q, Hundal NV, Shreffler WG, Katz AJ. Clinical Outcomes of Rescue Treatment for Eosinophilic Esophagitis. Digestive Disease Week, Chicago, IL, 2014.

  25. Schoepfer AM, Straumann A, Panczak R, Kuehni CE, Romero Y, Maurer E, Alexander JA, Hirano I, Gonsalves N, MD, Furuta GT, Dellon ES, Leung J, Moawad FJ, Collins MH, Bussmann C, Netzer P, Zwahlen M, Safroneeva E. Endoscopic features and peak eosinophil count predict physician assessment of eosinophilic esophagitis severity. Digestive Disease Week, Chicago, IL, 2014.

  26. Schoepfer AM, Straumann A, Panczak R, Kuehni CE, Romero Y, Maurer E, Alexander JA, Hirano I, Gonsalves N, MD, Furuta GT, Dellon ES, Leung J, Moawad FJ, Collins MH, Bussmann C, Netzer P, Zwahlen M, Safroneeva E. Dysphagia, behavioral changes, and thoracic pain predict adult patient-reported eosinophilic esophagitis severity. Digestive Disease Week, Chicago, IL, 2014.

  27. Ling, MF, Islam SA, Leung J, Shreffler WG, Luster AD. CCR8 is a Receptor for CCL18 on Human Th2 Cells. American Academy of Allergy & Immunology Annual Meeting, San Diego, CA, 2013.

  28. Mehrzad R, Leung J, Alejos A, Hundal N, Katz AJ, Yuan Q, Hesterberg PE, Shreffler WG. Serial diagnostic EGDs used to identify food trigger(s) in eosinophilic esophagitis are safe. American College of Gastroenterology Annual Scientific Meeting, San Deigo, CA, 2013.

  29. Hundal N, Leung J, Katz AJ, Yuan Q, Iyengar RS, Permaul P, Walter J, Ramakrishna J, Swenson T, Alejos AR, HesterbergPE, Shreffler WG. Differential expression of microRNA-203, microRNA-223 and microRNA-29b - may differentiate between disease and diet induced remission in patients with Eosinophilic Esophagitis. Digestive Disease Week, Orlando, FL, 2013.

  30. Tabatabaei N, Kang D, Leung J, Wu T,Carruth R, Shreffler WG, Katz AJ, Tearney GJ. Development of a Confocal Endomicroscopy Capsule for Diagnosis of Eosinophilic Esophagitis. Digestive Disease Week, Orlando, FL, 2013.

  31. Leung J, Katz AJ, Yuan Q, Iyengar SR, Permaul P, Walter JE, Ramakrishna JP, Hundal N, Swenson T, Alejos A, Shreffler WG, Hesterberg PE. Tolerance of Baked Milk in a Subset of Patients with Cow's Milk-mediated Eosinophilic Esophagitis. American Academy of Allergy & Immunology Annual Meeting, San Antonio, TX, 2013.

  32. Leung J, Wilson MT. Amoxicillin-induced Aseptic Meningitis with Neutrophilic Predominance. American Academy of Allergy & Immunology Annual Meeting, Orlando, FL, 2012.

  33. Javid G, Patel N, Weinstein B, Bonis PA, Leung J. Accurate identification and quantification of eosinophil granules on routine H&E slides from patients with active eosinophilic esophagitis using a semi-automated image processing system. American College of Gastroenterology Annual Scientific Meeting, Washington, DC, 2011.

  34. Levy, AN, Rahaman SM, Javid G, Bonis PA, Leung J. Eosinophilic esophagitis presenting as hiccups. American College of Gastroenterology Annual Scientific Meeting, Washington, DC, 2011.

  35. Leung J, Nguyen-Traxler A, Lee E, Yip J, Weinstock J, Poon P, Simon A, Ngo P, Fayanju L, Levy A, Bonis PA. Nitric oxide level as a surrogate biomarker for eosinophilic esophagitis. CTSI, Boston, MA, 2011

  36. Leung J, Blum A, Hang L, Setiawan T, Stoyanoff K, Weinstock JV. Helminths abrogate antigen-specific gut inflammation in a novel murine model of non-IgE mediated food hypersensitivity. American Association of Immunologists, Baltimore, MD, 2010.

  37. Stoyanoff K, Hang L, Blum A, Setiawan T, Leung J, Weinstock JV. HeligmosomoidesPolygyrus infection induces functionally distinct FOXP3 + IL-10 + and FOXP3 + IL-10 - cell subsets in the laminar propria of mice. American Association of Immunologists, Baltimore, MD, 2010

  38. Leung J, Blum A, Hang L, Setiawan T, Stoyanoff K, Weinstock JV. A New Preclinical Mouse Model for Antigen-Specific Non-IgE Mediated Food Hypersensitivity. Digestive Disease Week, New Orleans, LA, 2010. POSTER OF DISTINCTION

  39. Leung J, Bonder A, Sasson M, Bonis PA, Kaplan MM. 19 year follow-up of patients in a double-blind trial of colchicine plus ursodiol versus methotrexate plus ursodiol in the treatment of primary biliary cirrhosis. Digestive Disease Week, New Orleans, LA, 2010.

  40. Leung J, Dowling L, Obadan I, Davis J, Bonis PA, Kaplan MM, Casey D, Viveiros K. Risk of Non-Melanoma Skin Cancer in Autoimmune Hepatitis. Digestive Disease Week, New Orleans, LA, 2010. Digestive Disease Week, New Orleans, LA, 2010.

  41. Biswas N, Leung J, Kaplan MM, Bonis PA, Patel R, Vozcik J, Guelrud M. Clinical experience of using choledochoscopy as a cholangiocarcinoma screening tool in patients with primary sclerosing cholangitis. American College of Gastroenterology Annual Scientific Meeting, San Diego, CA, 2009.

  42. Stoyanoff K, Blum A, Hang L, Setiawan T, Leung J, Weinstock JV. Regulation of T cell specific IL-10 production by non- IL-10 expressing T cell subset. American Association of Immunologists, Seattle, CA, 2009

  43. Metwali A, Leung J, Ince N, Winckler S, Blum A, Setiawan T, Urban JF Jr, Weinstock J, Elliott D. IL 10 and IL 4 Synergize to Inhibit IL17 Production in Mice Colonized with the Intestinal HelminthHeligmosomoidesPolygyrus. Digestive Disease Week, San Diego, CA, 2008

  44. Patel SR, Diekema D, Leung J, Appelgate D, Winokur P, Stein DV, Boyken L, Kroeger J, Herwaldt L. The Epidemiology of Methicillin-resistant Staphylococcus aureus at a University Hospital in a Rural State. The Society for Healthcare Epidemiology of American, Baltimore, MD, 2007.

  45. Metwali A, Leung J, Ince M, Winkler S, Blum A, Setiawan T, Urban JF, Weinstock JV, Elliott D. Intestinal colonization with the helminthHeligmosomoidespolygyrus abrogates IL17A production by mesenteric lymph node cells. Digestive Disease Week, Los Angeles, CA, 2006.

  46. Higgins PDR, Schwartz M, Krokos I, Leung J, Mapili J, Wren P, Zimmermann EM. The Crumbling Domain Structure of the Inflammatory Bowel Disease Questionnaire. Crohn's and Colitis Foundation National Meeting, Miami, FL, 2005.

International

  1. Safroneeva E, Aceves SS, King E, Sun Q, Collins MH, Yang G-Y, Capocelli KE, Hirano I, Dellon ES, Abonia JP, Atkins D, Bonis PA, Carpenter CL, Dellon ES, Eby MD, Falk GW, Gonsalves N, Gupta SK, Hirano I, Kocher K, Krischer JP, Leung J, Lipscomb J, Menard-Katcher P, Mukkada VA, Pan Z, Schoepfer AS, Spergel JM, Wershil BK, Rothenberg ME, Furuta, GT*, on behalf of the Consortium of Eosinophilic Gastrointestinal Disease Researchers (CEGIR). Dilation alters the relationship between symptom-based patient-reported outcome and biologic measures in adults with EoE. Digestive Disease Week, Chicago, IL, 2020.

  2. Peterson KA, Murray JA, Falk GW, Gonsalves N, Chehade M, Leung J, Genta RM, Rothenberg ME, Khoury P, Bledsoe AC, Durrani SR, Shaw C, Rasmussen HS, Singh B, Chang AT, Kamboj AP, Hirano I, Dellon ES. Interim results of an open-label extension study of antolimab, an anti-siglec-8 antibody, for the treatment of patients with eosinophilic gastritis and/or eosinophilic enteritis. Digestive Disease Week, Chicago, IL, 2020.

  3. Dellon ES, Peterson KA, Murray JA, Falk GW, Gonsalves N, Chehade M, Leung J, Genta RM, Rothenbergy ME, Khoury P, Bledsoe AC, Durrani SR, Shaw C, Singh B, Chang AT, Kamboj AP, Rasmussen HS, Hirano I. Histologic and symptom improvement across multiple forms of eosinophilic gastrointestinal disease in ENIGMA, a randomized, double-blind, placebo-controlled trial of antolimab (AK002). Digestive Disease Week, Chicago, IL, 2020.

  4. Dellon ES, Peterson KA, Murray JA, Falk GW, Gonsalves N, Chehade M, Leung J, Genta RM, Rothenberg ME, Khoury P, Bledsoe AC, Shaw C, Rasmussen HS, Singh B, Chang AT, Kamboj AP, Hirano I. Efficacy and safety of AK002 in adult patients with active eosinophilic gastritis and/or eosinophilic gastroenteritis: Primary results from a randomized, double- blind, placebo-controlled phase 2 trial (ENIGMAStudy). American College of Gastroenterology Conference, San Antonio, TX, 2019.

  5. Hirano I, Peterson K, Murray J, Falk G, Gonsalves N, Chehade M, Leung J, Genta R, Rothenberg M, Khoury P, Bledsoe A, Shaw C, Rasmussen H, Singh B, Chang A, Kamboj A, Dellon E. Efficacy and safety of AK002 in adult patients with active eosinophilic gastritis and/or eosinophilic gastroenteritis: Primary results from a randomized, double-blind, placebo- controlled phase 2 trial (ENIGMAStudy). UEG Week, Barcelona, Spain, 2019.

  6. Leung J, Katz AJ, Yuan Q, Iyengar SR, Permaul P, Walter JE, Ramakrishna JP, Hundal N, Swenson T, Alejos A, Shreffler WG, Hesterberg PE. Tolerance of Baked Milk in a Subset of Patients with Cow's Milk-mediated Eosinophilic Esophagitis. American Academy of Allergy & Immunology annual meeting, San Antonio, TX, 2013.

  7. Sokol CL, Leung J, Guyer AC, Long A, Wong JT, Wilson MT, Banerji A. Novel Rituximab Desensitization Protocol Increases Safety of Drug Desensitization. American Academy of Allergy & Immunology annual meeting, Orlando, FL, 2012.

  8. Leung J, Blum A, Hang L, Setiawan T, Stoyanoff K, Weinstock JV. HeligmosomoidesPolygyrus abrogates antigen- specific gut inflammation in a novel murine model of non-IgE mediated food hypersensitivity. American Association of Immunologists, Baltimore, MD, 2010.