Nita Ahuja is a surgeon and the Chair of the Department of Surgery at Yale School of Medicine and Surgeon-in-Chief of Surgery at Yale New Haven Hospital. [1] [2] She is the first woman ever to serve as Chair of Surgery in Yale in its >200 year history. Before taking this position she was the first woman ever to be the Chief of Surgical Oncology at Johns Hopkins Hospital, Baltimore, USA. [3] Ahuja researches in the field of epigenetics and is a passionate advocate of clinician scientist. [4] She also served as the director of Sarcoma and peritoneal surface malignancy program. She is a surgeon-scientist and her research has been cited more than 11,000 times in scientific literature. [5]
Born in India, she migrated to the United States with her parents when she was 8 years old. [6] Her journey into the world of science started as a laboratory technician in Dept. of Immunology, National Institutes of Health (NIH), Bethesda. She was awarded with "Outstanding College Students of America" and "Alpha-omega-alpha original research award" for her outstanding research work. She joined the faculty of Johns Hopkins in 2003 after studying medicine at Duke University and surgery at Johns Hopkins. [3]
Ahuja runs a research laboratory focused on understanding the epigenetic dysregulation in gastrointestinal cancers such as colorectal cancers and pancreas cancers and translating the information to develop biomarkers and epigenetic therapeutics. [7] She has led over twenty national and international clinical trials on testing new therapies in gastrointestinal and breast cancers based on concepts identified in her laboratory. [8] Her work initially as a postdoctoral research fellow twenty years ago identified the concept of CpG island methylator phenotype (CIMP) or CpG island hypermethylation in colorectal cancer. [9] This concept of CIMP now is known to have implications for prognosis as well as response to therapy. [10] CIMP has now been shown to exist in multiple other tumor types such as glioblastomas, leukemia, duodenal cancers etc. [11] [12]
Her laboratory has also identified biomarkers for early detection of colorectal and pancreas cancer using non-invasive body fluids such as serum or plasma. [13] These biomarkers have been licensed and are currently being developed into a commercial assay. [14]
Ahuja also led the epigenetic therapy trials in solid tumors as part of the Stand Up To Cancer consortium since 2008 and since then her laboratory has generated preclinical data for the next generation of clinical epigenetic trials conducted nationally and internationally. [15] [16] She has won several awards over the years including the Abell Foundation Award: Johns Hopkins Alliance for Science and Technology Development in 2014. [17]
She is co-author of a 2016 report for the Society of University Surgeons on barriers facing surgeon-scientists in basic science. [18] She also co-authored Along with Soft Tissue Sarcomas, An Issue of Surgical Clinics (Volume 88-3) (The Clinics: Surgery (Volume 88-3)). [19]
As well as Johns Hopkins guides for patients, including:
Pancreatic cancer arises when cells in the pancreas, a glandular organ behind the stomach, begin to multiply out of control and form a mass. These cancerous cells have the ability to invade other parts of the body. A number of types of pancreatic cancer are known.
A pancreaticoduodenectomy, also known as a Whipple procedure, is a major surgical operation most often performed to remove cancerous tumours from the head of the pancreas. It is also used for the treatment of pancreatic or duodenal trauma, or chronic pancreatitis. Due to the shared blood supply of organs in the proximal gastrointestinal system, surgical removal of the head of the pancreas also necessitates removal of the duodenum, proximal jejunum, gallbladder, and, occasionally, part of the stomach.
The Johns Hopkins University School of Medicine (JHUSOM) is the medical school of Johns Hopkins University, a private research university in Baltimore, Maryland. Founded in 1893, the School of Medicine shares a campus with Johns Hopkins Hospital and Johns Hopkins Children's Center, established in 1889.
Pancreatoblastoma is a rare type of pancreatic cancer. It occurs mainly in childhood and has a relatively good prognosis.
KRAS is a gene that provides instructions for making a protein called K-Ras, a part of the RAS/MAPK pathway. The protein relays signals from outside the cell to the cell's nucleus. These signals instruct the cell to grow and divide (proliferate) or to mature and take on specialized functions (differentiate). It is called KRAS because it was first identified as a viral oncogene in the KirstenRAt Sarcoma virus. The oncogene identified was derived from a cellular genome, so KRAS, when found in a cellular genome, is called a proto-oncogene.
Steven Kenneth Libutti, M.D., F.A.C.S. is an American surgeon and scientist. In January 2017, he became the third permanent Director of the Rutgers Cancer Institute of New Jersey, Vice Chancellor for Cancer Programs for Rutgers Biomedical and Health Sciences and the Senior Vice President for Oncology Services for RWJBarnabas Health, the largest health system in New Jersey. He is a tenured Distinguished Professor of Surgery at the Rutgers Robert Wood Johnson Medical School. Libutti's work on the study of tumor angiogenesis and the tumor microenvironment has led to novel approaches for the treatment of cancer. He is also one of the pioneers of regional and targeted cancer therapy.
Jonathan J. Lewis is an American surgeon, biomedical researcher and entrepreneur. He was trained in surgery in South Africa, Britain, and the United States, and is a fellow of both the Royal College of Surgeons and the American College of Surgeons. Dr. Lewis was awarded an MB.B.Ch. from University of the Witwatersrand School of Medicine, and his Ph.D. in Molecular Biology from Witwatersrand and Yale School of Medicine. He completed his Surgical Residency at Charlotte Maxeke Johannesburg Academic Hospital and at Yale-New Haven Hospital. Lewis was a Professor of Surgery and Medicine Memorial Sloan-Kettering Cancer Center, before working in the biotechnology and healthcare industries, serving in several CEO and Chairman roles. He is currently chairman and co-founder of the Molecular Ninja Group and chairman and co-founder of Dugri Inc.
Cancer epigenetics is the study of epigenetic modifications to the DNA of cancer cells that do not involve a change in the nucleotide sequence, but instead involve a change in the way the genetic code is expressed. Epigenetic mechanisms are necessary to maintain normal sequences of tissue specific gene expression and are crucial for normal development. They may be just as important, if not even more important, than genetic mutations in a cell's transformation to cancer. The disturbance of epigenetic processes in cancers, can lead to a loss of expression of genes that occurs about 10 times more frequently by transcription silencing than by mutations. As Vogelstein et al. points out, in a colorectal cancer there are usually about 3 to 6 driver mutations and 33 to 66 hitchhiker or passenger mutations. However, in colon tumors compared to adjacent normal-appearing colonic mucosa, there are about 600 to 800 heavily methylated CpG islands in the promoters of genes in the tumors while these CpG islands are not methylated in the adjacent mucosa. Manipulation of epigenetic alterations holds great promise for cancer prevention, detection, and therapy. In different types of cancer, a variety of epigenetic mechanisms can be perturbed, such as the silencing of tumor suppressor genes and activation of oncogenes by altered CpG island methylation patterns, histone modifications, and dysregulation of DNA binding proteins. There are several medications which have epigenetic impact, that are now used in a number of these diseases.
Ralph H. Hruban is professor of pathology and oncology at the Johns Hopkins School of Medicine. He is currently Director of the Sol Goldman Pancreatic Cancer Research Center at Johns Hopkins, and Baxley Professor and Director of the Department of Pathology. He is a world expert on pancreatic cancer.
Carolyn Kaelin was an American cancer surgeon. She worked at the Dana–Farber Cancer Institute and founded the Comprehensive Breast Health Center at Brigham and Women’s Hospital in 1995.
Stephen Bruce Baylin is the deputy director and associate director for research at the Sidney Kimmel Comprehensive Cancer Center and Virginia and D.K. Ludwig Professor for Cancer Research and medicine and chief of cancer biology of the Johns Hopkins University School of Medicine. His research focus is epigenetics in the development of cancer, and he was one of the first researchers in this field in the 1980s.
Elizabeth M. Jaffee is an American oncologist specializing in pancreatic cancer and immunotherapy.
CpG island hypermethylation is a phenomenon that is important for the regulation of gene expression in cancer cells, as an epigenetic control aberration responsible for gene inactivation. Hypermethylation of CpG islands has been described in almost every type of tumor.
Julie Ann Sosa is a professor and chair of the Department of Surgery at the University of California, San Francisco (UCSF) and holds the Leon Goldman, MD, Distinguished Professorship in Surgery. She currently serves as the Treasurer of the American Thyroid Association and Editor-in-Chief of the World Journal of Surgery.
Fabrizio Michelassi, M.D., F.A.C.S. is the Lewis Atterbury Stimson Professor, and Chairman of the Department of Surgery at Weill Cornell Medicine and Surgeon-in-Chief at NewYork-Presbyterian/Weill Cornell Medical Center.
Julie Ann Freischlag is an American vascular surgeon and current CEO of Atrium Health Wake Forest Baptist. She was the first female surgeon-in-chief of The Johns Hopkins Hospital and the first female chief of vascular surgery at the University of California, Los Angeles. In 2017, Freischlag was appointed Interim Dean of Wake Forest School of Medicine and CEO of the Wake Forest Baptist Medical Center. During the COVID-19 pandemic in North America, Freischlag was named chief academic officer of Atrium Health, Inc., and appointed the President-Elect of the American College of Surgeons.
John Lemuel Cameron (1936-) is an American surgeon. He is the Alfred Blalock Distinguished Service Professor of Surgery at the Johns Hopkins School of Medicine.
Nilofer Saba Azad is an American oncologist and physician-scientist specialized in gastrointestinal, colorectal, cholangiocarcinoma, and pancreaticobiliary cancers. She is a professor at the Johns Hopkins School of Medicine and oversees clinical trials at the Sidney Kimmel Comprehensive Cancer Center.
Monica Bertagnolli is an American surgical oncologist and the 17th director of the National Institutes of Health. She previously served as the 16th director of the National Cancer Institute (NCI). Prior to her governmental positions, she worked at Brigham and Women's Hospital and Dana–Farber Cancer Institute and was the Richard E. Wilson Professor of Surgery at Harvard Medical School.
Timothy Michael Pawlik is an American surgical oncologist. He is the Chair of the Department of Surgery and the Urban Meyer III and Shelley Meyer Chair for Cancer Research at Ohio State University and Surgeon-in-Chief at the Ohio State University Wexner Medical Center.