“My research uncovered a series of physicians who served as ‘clinical champions’ and dramatically sped the process of drug development,” Dr. Flowers recalled in an interview. “This early career research inspired me to become the type of clinical champion that I uncovered.”
MD Anderson Cancer Center
Dr. Christopher Flowers
Over his career, hematologist-oncologist Dr. Flowers has developed lifesaving therapies for lymphoma, which has transformed into a highly treatable and even curable disease. He’s listed as a coauthor of hundreds of peer-reviewed cancer studies, reports, and medical society guidelines. And he’s revealed stark disparities in blood cancer care: His research shows that non-White patients suffer from worse outcomes, regardless of factors like income and insurance coverage.
The University of Texas MD Anderson Cancer Center, Houston, recently named physician-scientist Dr. Flowers as division head of cancer medicine, a position he’s held on an interim basis. As of Sept. 1, he will permanently oversee 300 faculty and more than 2,000 staff members.
A running start in Seattle
For Dr. Flowers, track and field is a sport that runs in the family. His grandfather was a top runner in both high school and college, and both Dr. Flowers and his brother ran competitively in Seattle, where they grew up. But Dr. Flowers chose a career in oncology, earning a medical degree at Stanford and master’s degrees at both Stanford and the University of Washington, Seattle.
The late Kenneth Melmon, MD, a groundbreaking pharmacologist, was a major influence. “He was one of the first people that I met when I began as an undergraduate at Stanford. We grew to be long-standing friends, and he demonstrated what outstanding mentorship looks like. In our research collaboration, we investigated the work of Dr. Gertrude Elion and Dr. George Hitchings involving the translation of pharmacological data from cellular and animal models to clinically useful drugs including 6-mercaptopurine, allopurinol, azathioprine, acyclovir, and zidovudine.”
The late Oliver Press, MD, a blood cancer specialist, inspired Dr. Flower’s interest in lymphoma. “I began work with him during an internship at the University of Washington. Ollie was a great inspiration and a key leader in the development of innovative therapies for lymphoma. He embodied the role of a clinical champion translating work in radioimmunotherapy to new therapeutics for patients with lymphomas. Working with him ultimately led me to pursue a career in hematology and oncology with a focus on the care for patients with lymphomas.”
Career blooms as lymphoma care advances
Dr. Flowers went on to Emory University, Atlanta, where he served as scientific director of the Research Informatics Shared Resource and a faculty member in the department of biomedical informatics. “I applied my training in informatics and my clinical expertise to support active grants from the Burroughs Wellcome Fund for Innovation in Regulatory Science and from the National Cancer Institute to develop informatics tools for pathology image analysis and prognostic modeling.”
For 13 years, he also served the Winship Cancer Institute as director of the Emory Healthcare lymphoma program (where his patients included Kansas City Chiefs football star Eric Berry), and for 4 years as scientific director of research informatics. Meanwhile, Dr. Flowers helped develop national practice guidelines for the American Society of Clinical Oncology, the American Cancer Society, and the American College of Radiology. He also chaired the ASCO guideline on management of febrile neutropenia.
In 2019, MD Anderson hired Dr. Flowers as chair of the department of lymphoma/myeloma. A year later, he was appointed division head ad interim for cancer medicine.
“Chris is a unique leader who expertly combines mentorship, sponsorship, and bidirectional open, honest communication,” said Sairah Ahmed, MD, associate professor of lymphoma at MD Anderson. “He doesn’t just empower his team to reach their goals. He also inspires those around him to turn vision into reality.”
As Dr. Flowers noted, many patients with lymphoma are now able to recover and live normal lives. He himself played a direct role himself in boosting lifespans.
“I have been fortunate to play a role in the development of several treatments that have led to advances in first-line therapy for patients with aggressive lymphomas. I partnered with others at MD Anderson, including Dr. Sattva Neelapu and Dr. Jason Westin, who have developed novel therapies like chimeric antigen receptor T-cell therapy for patients with relapse lymphomas,” he said. “Leaders in the field at MD Anderson like Dr. Michael Wang have developed new oral treatments for patients with rare lymphoma subtypes like mantle cell lymphoma. Other colleagues such as Dr. Nathan Fowler and Dr. Loretta Nastoupil have focused on the care for patients with indolent lymphomas and developed less-toxic therapies that are now in common use.”
Exposing the disparities in blood cancer care
Dr. Flowers, who’s African American, has also been a leader in health disparity research. In 2016, for example, he was coauthor of a study into non-Hodgkin’s lymphoma that revealed that Blacks in the United States have dramatically lower survival rates than Whites. The 10-year survival rate for Black women with chronic lymphocytic leukemia was just 47%, for example, compared with 66% for White females. “Although incidence rates of lymphoid neoplasms are generally higher among Whites, Black men tend to have poorer survival,” Dr. Flowers and colleagues wrote.
In a 2021 report for the ASCO Educational Book, Dr. Flowers and hematologist-oncologist Demetria Smith-Graziani, MD, now with Emory University, explored disparities across blood cancers and barriers to minority enrollment in clinical trials. “Some approaches that clinicians can apply to address these disparities include increasing systems-level awareness, improving access to care, and reducing biases in clinical setting,” the authors wrote.
Luis Malpica Castillo, MD, assistant professor of lymphoma at MD Anderson Cancer Center, lauded the work of Dr. Flowers in expanding opportunities for minority patients with the disease.
“During the past years, Dr. Flowers’ work has not only had a positive impact on the Texan community, but minority populations living with cancer in the United States and abroad,” he said. “Currently, we are implementing cancer care networks aimed to increase diversity in clinical trials by enrolling a larger number of Hispanic and African American patients, who otherwise may not have benefited from novel therapies. The ultimate goal is to provide high-quality care to all patients living with cancer.”
In addition to his research work, Dr. Flowers is an advocate for diversity within the hematology community. He’s a founding member and former chair of the American Society of Hematology’s Committee on Diversity, Equity and Inclusion (formerly the Committee on Promoting Diversity), and he helped develop the society’s Minority Recruitment Initiative.
What’s next for Dr. Flowers? For one, he plans to continue working as a mentor; he received the ASH Mentor Award in honor of his service in 2022. “I am strongly committed to increasing the number of tenure-track investigators trained in clinical and translational cancer research and to promote their career development.”
And he looks forward to helping develop MD Anderson’s recently announced $2.5 billion hospital in Austin. “This will extend the exceptional care that we provide as the No. 1 cancer center in the United States,” he said. “It will also create new opportunities for research and collaboration with experts at UT Austin.”
When he’s not in clinic, Dr. Flowers embraces his lifelong love of speeding through life on his own two feet. He’s even inspired his children to share his passion. “I run most days of the week,” he said. “Running provides a great opportunity to think and process new research ideas, work through leadership challenges, and sometimes just to relax and let go of the day.”