Heranmaye Channavajjala Prasad, MD

Dr. Sean Agbor-Enoh is an instructor of medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include pulmonary and critical care medicine. He received his M.D. from the University of Cameroon. He completed his residency at Johns Hopkins Bayview Medical Center and performed a fellowship in pulmonary medicine at Johns Hopkins.

In her first decade as a pediatric oncologist, Dr. Symons already has shown an impressive ability to juggle multiple research projects, in addition to caring for patients.One of Dr. Symons' research pursuits focuses on using a novel immunotherapy approach to treating both solid tumors and hematologic (blood-borne) malignancies. The basis of her work stems from the theory that cancer patients' immune systems should recognize tumor cells as foreign and destroy them. This doesn't happen, theorizes Dr. Symons, because the immune system attacks only those cells it perceives as dangerous—not cancer cells, which it sees simply as foreign. That's where her research comes into play.Evaluating an experimental therapy, Dr. Symons is pairing donor lymphocytes (white blood cells that activate the body's immune system) with chemotherapy to determine if this combination will "awaken" patients' immune systems to the danger of existing cancer cells and, in turn, elicit an immune response.In a separate yet equally compelling research endeavor, Dr. Symons is working to increase the availability of donors for children whose cancer requires bone marrow transplants (BMTs) as a potentially lifesaving treatment. "It can be challenging to find a 'matched' donor," says Dr. Symons, who explains that only about 40 percent of patients who require a BMT find a matched donor. "Sometimes, we don't have the benefit of time, because remissions can be short-lived. But almost all patients have a half-matched donor: a parent, sibling, or child," adds Dr. Symons, who is examining ways to reduce BMT-related complications ordinarily associated with half-matched donors after ablative (high dose) chemotherapy."Like anything else that's new, it will take some time to prove that this is a feasible option that's safe," she says. But she's optimistic. "It has the potential to revolutionize BMT." Dr. Symons knows it's worth the wait. "Seeing the research I do in the lab translate into clinical trials, then seeing patients in these trials survive long term, is incredibly rewarding," she says.

Dr. Christine Pratilas is a pediatric medical oncologist at the Sidney Kimmel Comprehensive Cancer Center and Associate Professor of Oncology, Pediatrics & Cellular and Molecular Medicine at the Johns Hopkins University School of Medicine. She joined the Hopkins pediatric sarcoma team in 2014. Dr. Pratilas received her undergraduate degree in Biology from Drew University in New Jersey and her medical degree from UMDNJ - Robert Wood Johnson Medical School (now Rutgers University), where she also completed her internship and residency from 1999 to 2002. From 2002 to 2005 she was a fellow in hematology and oncology in the Memorial Sloan Kettering Cancer Center (MSKCC) Department of Pediatrics, and in the Department of Pediatric Hematology and Oncology at New York Weill Cornell Medical Center. She was a postdoctoral research fellow in Dr. Neal Rosen’s Molecular Oncogenesis Laboratory at MSKCC. From 2006 to 2014 she was attending in Pediatric Oncology at MSKCC, specializing in developmental therapeutics & sarcoma. She has been the director of the pediatric sarcoma program at Hopkins since 2018. Dr. Pratilas focuses her research on cancer-associated pathways and signal transduction, which involves figuring out how a cell’s internal molecular pathways work, and how those pathways can be molecularly controlled. This knowledge is the basis for developing promising new molecularly targeted cancer therapies, which is the focus of Dr. Pratilas’s research. Among her important scientific contributions is advancing our understanding of how certain proteins that can be mutated in cancer, known as RAF kinases (specifically BRAF), affect a cancer cell’s behavior. The research in Dr. Pratilas' laboratory is focused on RAS signal transduction pathways, concentrating on pediatric sarcomas such as rhabdomyosarcoma and malignant peripheral nerve sheath tumors, in order to develop novel therapeutics for children with these tumors.