Center for Cell and Gene Therapy for Non-Malignant Conditions

Meet the Cell and Gene Therapy Team

The Center for Cell and Gene Therapy for Non-malignant Conditions is comprised of several treatment teams, with specialists in immunology, hematology, oncology and bone marrow transplant.



Deepak Chellapandian, M.D.

Deepak Chellapandian, M.D. Director



Michelle Cooper, R.N.

Michelle Cooper, R.N. Coordinator


Treatment Teams

Hemoglobinopathies

E. Leila Jerome Clay, MD Hematology / Oncology

Dr. Clay is the director of the sickle cell program in the Johns Hopkins All Children's Cancer & Blood Disorders Institute. She is an assistant professor of pediatrics in the Johns Hopkins University School of Medicine. Dr. Clay treats children, adolescents and young adults with rare blood disorders such as sickle cell disease and thalassemia. Trained in both pediatrics and internal medicine, she plays the key role of a physician navigator in transitioning adolescents with these diseases to adult care. She has established her research in sickle cell disease where she studies the mechanistic contribution of vitamin D deficiency and its effects of disease manifestation of sickle cell disease as well as bone disease. Her primary professional objective is to translate her clinical research to the field.
View E. Leila’s Bio

Deepakbabu Chellapandian, MD Hematology / Oncology

Dr. Chellapandian specializes in bone marrow transplant as a hematologist/oncologist and serves as Director of the Center for Cell and Gene Therapy for Non-Malignant Conditions (CCGNC) in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. He joined the hospital staff in 2017. Dr. Chellapandian earned his medical degree from Madurai Medical College and then trained at Postgraduate Institute of Medical Education and Research, both in India. He completed a residency in pediatrics at Albert Einstein Medical Center in Philadelphia, Pennsylvania. Dr. Chellapandian completed a pediatric hematology-oncology and bone marrow transplantation fellowship at Hospital for Sick Children/University of Toronto in Canada and an advanced fellowship on bone marrow transplantation and cellular therapy at St. Jude Children’s Research Hospital in Memphis, Tennessee.
View Deepakbabu’s Bio

Severe combined immunodeficiency

Jolan Walter, MD PhD Allergy / Immunology

Dr. Walter is the division chief of the University of South Florida (USF) and Johns Hopkins All Children’s Pediatric Allergy & Immunology Programs. She is the Robert A. Good Endowed Chair of the USF Division of Pediatric Allergy & Immunology, and an associate professor of pediatrics, medicine and molecular biology in the USF Morsani College of Medicine. She serves as director of the Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies at Johns Hopkins All Children’s. Her research interests include understanding the (severe) combined immunodeficiencies, and breech in tolerance in primary immune disorders leading to autoimmunity and inflammation. Dr. Walter has specific clinical expertise in the diagnosis and treatment of patients with (severe) combined immunodeficiencies, in particular those with recombination activating gene (RAG) variants. She is focusing on genetic evaluation, mechanism-based treatment therapies for non-infectious complications and involved in the care of patients with definitive therapies such as hematopoietic stem cell transplantation (HSCT) and gene therapy protocols.
View Jolan’s Bio

Non-SCID primary immunodeficiencies

Deepakbabu Chellapandian, MD Hematology / Oncology

Dr. Chellapandian specializes in bone marrow transplant as a hematologist/oncologist and serves as Director of the Center for Cell and Gene Therapy for Non-Malignant Conditions (CCGNC) in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. He joined the hospital staff in 2017. Dr. Chellapandian earned his medical degree from Madurai Medical College and then trained at Postgraduate Institute of Medical Education and Research, both in India. He completed a residency in pediatrics at Albert Einstein Medical Center in Philadelphia, Pennsylvania. Dr. Chellapandian completed a pediatric hematology-oncology and bone marrow transplantation fellowship at Hospital for Sick Children/University of Toronto in Canada and an advanced fellowship on bone marrow transplantation and cellular therapy at St. Jude Children’s Research Hospital in Memphis, Tennessee.
View Deepakbabu’s Bio

Immune dysregulation disorders

Deepakbabu Chellapandian, MD Hematology / Oncology

Dr. Chellapandian specializes in bone marrow transplant as a hematologist/oncologist and serves as Director of the Center for Cell and Gene Therapy for Non-Malignant Conditions (CCGNC) in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. He joined the hospital staff in 2017. Dr. Chellapandian earned his medical degree from Madurai Medical College and then trained at Postgraduate Institute of Medical Education and Research, both in India. He completed a residency in pediatrics at Albert Einstein Medical Center in Philadelphia, Pennsylvania. Dr. Chellapandian completed a pediatric hematology-oncology and bone marrow transplantation fellowship at Hospital for Sick Children/University of Toronto in Canada and an advanced fellowship on bone marrow transplantation and cellular therapy at St. Jude Children’s Research Hospital in Memphis, Tennessee.
View Deepakbabu’s Bio

Bone marrow failure disorders

Deepakbabu Chellapandian, MD Hematology / Oncology

Dr. Chellapandian specializes in bone marrow transplant as a hematologist/oncologist and serves as Director of the Center for Cell and Gene Therapy for Non-Malignant Conditions (CCGNC) in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. He joined the hospital staff in 2017. Dr. Chellapandian earned his medical degree from Madurai Medical College and then trained at Postgraduate Institute of Medical Education and Research, both in India. He completed a residency in pediatrics at Albert Einstein Medical Center in Philadelphia, Pennsylvania. Dr. Chellapandian completed a pediatric hematology-oncology and bone marrow transplantation fellowship at Hospital for Sick Children/University of Toronto in Canada and an advanced fellowship on bone marrow transplantation and cellular therapy at St. Jude Children’s Research Hospital in Memphis, Tennessee.
View Deepakbabu’s Bio

Benjamin Oshrine, MD Hematology / Oncology

Dr. Oshrine is the division chief of blood and marrow transplant and specializes in blood and marrow transplants as a pediatric hematologist/oncologist in the Johns Hopkins All Children’s Cancer & Blood Disorders Institute. His clinical focus is in the treatment of high-risk leukemias with blood and marrow transplantation, and his research focus is in immune recovery after transplant. He joined the hospital in 2014 after completing a fellowship in pediatric hematology/oncology at the Children’s Hospital of Philadelphia. Dr. Oshrine earned his medical degree from the University of Virginia School of Medicine and completed his residency at Boston Children’s Hospital.
View Benjamin’s Bio