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Jonathan Picker

MBChB, Ph.D.

Assistant Professor of Genetics, Harvard Medical School

Director, Harvard Medical School Genetics Training Program Course

Attending Physician in Clinical Genetics, Boston Children’s Hospital

Director, Pharmacogenomics Service

Dr. Picker graduated in Medicine from Aberdeen University in Scotland. He followed this with training in Pediatrics and a PhD in Molecular Biology (Agriculture), both carried out in Newcastle upon Tyne, England. Following this he undertook clinical genetics and child and adolescent psychiatry training at Boston Children’s Hospital where he has stayed on as faculty.

He is focused on bringing personalized medicine into the mainstream. His research is focused on application of genomics with special reference to behavioral disorders.

At BCH, he is focused on development of personalized medicine through leading the education of trainees (as director of the Advanced Human Genetics Course at Harvard Medical School) as well as directly via the co-founding and co- directorship of the BCH Pharmacogenomic clinic, the first dedicated precision medicine clinical initiative at BCH. In addition to clinical care, this clinic plays a central role in training and support within and beyond the hospital. 

Jonathan Picker

MBChB, Ph.D.

Assistant Professor of Genetics, Harvard Medical School

Director, Harvard Medical School Genetics Training Program Course

Attending Physician in Clinical Genetics, Boston Children’s Hospital

Director, Pharmacogenomics Service

Dr. Picker graduated in Medicine from Aberdeen University in Scotland. He followed this with training in Pediatrics and a PhD in Molecular Biology (Agriculture), both carried out in Newcastle upon Tyne, England. Following this he undertook clinical genetics and child and adolescent psychiatry training at Boston Children’s Hospital where he has stayed on as faculty.

He is focused on bringing personalized medicine into the mainstream. His research is focused on application of genomics with special reference to behavioral disorders.

At BCH, he is focused on development of personalized medicine through leading the education of trainees (as director of the Advanced Human Genetics Course at Harvard Medical School) as well as directly via the co-founding and co- directorship of the BCH Pharmacogenomic clinic, the first dedicated precision medicine clinical initiative at BCH. In addition to clinical care, this clinic plays a central role in training and support within and beyond the hospital. 

Recent Publications

Recessive variants in WSB2 encoding a substrate receptor of E3 ubiquitin ligase underlie a neurodevelopmental syndrome

Published On 2025 May 15

Journal article

WD40 and SOCS box protein-2 (WSB2), a member of the large family of suppressor of cytokine signaling (SOCS)-box proteins, has recently been identified as a substrate receptor of cullin 5 E3 ligase that plays an important role in proteomic regulation through substrate ubiquitination and proteasomal degradation. Here we report five patients from four unrelated families presenting with neurodevelopmental delay, dysmorphic features, brain structural abnormalities with or without growth restriction,...


Chemical genetic analysis of enoxolone inhibition of Clostridioides difficile toxin production reveals adenine deaminase and ATP synthase as antivirulence targets

Published On 2024 Sep 29

Journal article

Toxins TcdA and TcdB are the main virulence factors of Clostridioides difficile, a leading cause of hospital-acquired diarrhea. Despite their importance, there is a significant knowledge gap of druggable targets for inhibiting toxin production. To address this, we screened nonantibiotic phytochemicals to identify potential chemical genetic probes to discover antivirulence drug targets. This led to the identification of 18β-glycyrrhetinic acid (enoxolone), a licorice metabolite, as an inhibitor...