The reasons why race is a predictor of MACE risk is unknown. Dr Twardowski said future studies need to look at more than just MACE and factor in comorbidities. “The risk may not be as great as we thought,”Dr Twardowski said. “I think the findings are provocative, but these retrospective studies have some limitations, such as how accurate these databases really are.”

Christopher Saigal, MD, MPH, professor and vice chair of urology at the David Geffen School of Medicine at the University of California in Los Angeles, said this study will need to be validated because it is uncertain how accurately this one individual health system captured all of the MACE events in this patient population. “It is possible that events occurred at nearby hospitals and were not recorded. The [study] abstract does not make clear how underlying MACE risk factors were accounted for in the calculation of event rates,” Dr Saigal said.

Anthony V. D’Amico, MD, PhD, chief of the Division of Genitourinary Radiation Oncology at the Dana-Farber Cancer Institute and professor of radiation oncology at Harvard Medical School in Massachusetts, said the MACE rates found in the current study are most likely on target as a consequence of improved medical management and new therapeutic agents. “I think the rates are lower because of increased awareness by treating physicians of the potential CV risks of ADT and as a result are proactive in assessing CV risk before initiating ADT and correcting any CV issues,” Dr D’Amico said. “There also could be a shift toward LHRH antagonists, which have a lower risk of MACE.”

Eiman Jahangir, MD, MPH, associate professor of medicine at Vanderbilt University in Nashville, Tennessee, said the findings are clinically relevant because they add to the current body of knowledge about how the shift toward LHRH antagonists may be affecting MACE risk factors. The new findings, however, will need to be replicated in prospective studies, he said. Regardless, all men receiving ADT should be optimized from a cardiovascular risk standpoint, Dr Jahangir said. “Furthermore, as new ADTs are introduced, monitoring for cardiovascular effects is important. There is variability in what each treatment can cause.”

Reference

Twardowski PW, Boldt-Houle DM, Atkinson SN. Comparison of risk of major cardiovascular events with androgen deprivation therapy by race using real-world data. Presented at the Society of Urologic Oncology 22nd annual meeting, December 1-3, 2021. Poster 221.

This article originally appeared on Renal and Urology News