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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

Scaling Genomic Reanalysis to Unlock Diagnoses and Transform Rare Disease Care

Published On 2026 Feb 20

Journal article

Genomic reanalysis can identify causative variants for rare diseases as patient phenotypes evolve and gene-disease knowledge expands. Despite its diagnostic value, routine reanalysis is limited by clinician capacity, lack of patient follow-up, data silos, cost, and lack of availability of clinical data to testing laboratories that are not obligated to conduct reanalysis. The Children's Rare Disease Collaborative at Boston Children's Hospital (BCH) has integrated genomic and phenotypic data from...


Relationship Between Intellectual Disability and Behavioral Comorbidity in Children With Fragile X Syndrome

Published On 2025 Oct 23

Journal article

CONCLUSION: The ID-behavioral comorbidity associations reported here could help in the identification and management of problematic behaviors in individuals with FXS and other ID-associated disorders.