Research Consortium on Quest to Improve Male Infertility Tx

A study by researchers at two academic medical centers determined which infertile men may benefit from treatment with anastrozole. They found that those with azoospermia (no sperm in their ejaculate) rarely respond to the drug while those with baseline nonazoospermia, lower levels of luteinizing hormone and follicle-stimulating hormone, and higher levels of testosterone are more likely to obtain improvement in semen parameters.

The retrospective cohort study of 90 infertile men, published in the October 2023 issue of Fertility and Sterility, was conducted by researchers at Cleveland Clinic and the University of California Los Angeles. It is the first project of Male Organ Biology Yielding United Science (MOBYUS), a new, multi-institutional research consortium seeking to better understand male infertility and expand treatment options. 

Launched last year, MOBYUS now includes investigators from 14 large US-based academic medical centers. They select research topics and search their patient population for eligible participants and share resulting deidentified data for analysis and publication. 

Members of the consortium conducted another study which found that combination therapy with clomiphene citrate and anastrozole was associated with modest benefits on semen parameters, including volume, concentration, and motility after treatment, compared with anastrozole monotherapy. That retrospective cohort analysis of 21 men was published online in Translational Andrology and Urology in February. 

“We know that if we treat the right men with these medications, about 40% will improve their fertility, but only if we choose the right population. These studies identified those groups,” Scott Lundy, MD, PhD, section head of male infertility at Cleveland Clinic’s Glickman Urological and Kidney Institute in Cleveland, and director of the clinic’s andrology lab, told Medscape Medical News. 

Lundy, a co-author of both papers, conceived MOBYUS to overcome constraints in research into male infertility. Many studies in the field are limited by small numbers of patients and retrospective designs, he said. “I sought to develop a collaborative network of reproductive urologists and hospitals like ours, so that we can combine our data and generate large series of data, even for rare patient groups, so that we can improve their patient outcomes,” he said.

“Our treatments are in the stone age in many ways. We are far behind other types of treatment for other conditions, including female infertility,” Lundy added. “And so, our goal is to identify new and data-driven ways to help these men become fathers, whether those are medications or surgeries or combinations of treatments.”

Moving the Field Forward

The name of the consortium is a cheeky play on Moby Dick, the most famous sperm whale. MOBYUS investigators conveyed the challenges that patients, doctors, and researchers experience in an article, “Deafening Silence on Male Infertility,” published last December in the Journal of Urology. 

They noted that 1 in 6 couples will have difficulty conceiving a child, with male-factor infertility contributing to at least half of such cases. The lead author, Catherine Nam, MD, a principal investigator for MOBYUS at the University of Michigan, in Ann Arbor, said the paper is unusual for a medical journal, as it provides personal accounts of the psychological and emotional aspects of infertility as well as factors that have led to a global decline in sperm counts among men and the financial costs of treatment.

Nam said infertility is a sensitive topic for couples and families to talk about and there is less conversation about male infertility than female infertility. “I think the only way that we can be able to make headway, both in terms of protocol and policy outcomes, is to really start to raise awareness,” Nam, who is doing a fellowship in clinical andrology at Northwestern University, in Chicago, said.

Nam said the collaborative environment of MOBYUS has enabled her to learn about different practice patterns across different institutions. “For someone like me just starting off my professional career in male infertility, an opportunity like this is incredibly exciting and makes me very hopeful about the kinds of collaboration and scientific discovery that we’re able to do together as a group,” she said.

Robert Brannigan, MD, vice chair of clinical urology at Northwestern University Feinberg School of Medicine, said the consortium is drawing on the strength of many individual centers and allowing them to study critical issues in the field. The group’s outstanding clinicians and scientists “are looking to move the field forward, and I applaud them and I’m eager to watch things unfold,” said Brannigan, who is not a member of the group.

Brannigan noted that for a large percentage of patients, clinicians cannot identify the root cause of their impaired reproductive potential. Some people may have a recognizable decline in semen parameters over time without clear lifestyle issues or clear hormonal imbalances or anatomical problems. 

“And the question is, what’s causing that? Is there some as yet unrecognized environmental exposure? Is there some underlying genetic issue that’s predisposing to decline in semen parameters over time? We see this, and we don’t have answers,” Brannigan said. 

“This is where I think the potential power of a large group like MOBYUS comes into play,” he added. “When you’ve got large datasets and very granular information about your patients, sometimes that can provide the opportunity for insights that can then answer the question, ‘What is the root cause of my patient’s challenges?'”

Brannigan was part of a previous group, the Andrology Research Consortium, which collected data on patient history and treatment through a standardized questionnaire. The consortium was founded in 2013 by the Society for the Study of Male Reproduction, a specialty section of the American Urological Association, to obtain data on the demographics, clinical characteristics, and fertility histories and therapies of men referred for a male infertility investigation at clinics across North America. 

Clinicians analyzed data from the questionnaires, which a team in Toronto collected and stored, in a series of studies, including a comparison of fertility characteristics between men in the United States and Canada. Brannigan said MOBYUS is poised to produce a large dataset that can address retrospective questions and potentially prospectively collect data to answer prospective questions.

Clinical Implications

Lundy said between 100 and 200 practicing reproductive urologists across the country regularly communicate with each other. He first raised the idea of creating a consortium with friends and colleagues and then discussed it at scientific meetings. The network steadily gained traction and is continuing to add institutions. “There’s a great deal of excitement in our community about this,” Lundy said.

MOBYUS, which is IRB-approved, has a database with data from more than 4000 patients. The consortium has not received any industry funding but plans to pursue grant applications in the future. 

The MOBYUS website includes a list of its member institutions and leading investigators and its three proof-of-principle manuscripts published to date. The team identifies new research projects at monthly virtual meetings.

Lundy said MOBYUS’ main goal is to identify a treatment that will change the avenue available for a couple to get pregnant. For example, he said, if a man has zero sperm in his semen, he often requires surgery to find and remove sperm from the testicle. If medications can produce low sperm counts, sperm found in the ejaculate can be frozen and surgery can be avoided. 

Lundy said MOBYUS’ two publications on medical therapies have changed clinical practice, as he and many others have begun to provide the treatments on more carefully selected patients with good outcomes. 

Nam said patients want to know what they can expect from therapies and these research findings will have “a lot of clinical implications” in counseling them. 

The MOBYUS team will be describing the consortium and its goals in an abstract presentation at the American Society for Reproductive Medicine Scientific Congress & Expo, to be held October19-23 in Denver, Colorado, and in an oral presentation at the Sexual Medicine Society of North America’s annual fall scientific meeting, to be held October 17-20 in Scottsdale, Arizona.

The sources in this story reported no relevant financial conflicts of interest. 

Brenda Sandburg is a freelance journalist who has written about US Food and Drug Administration policies, the biopharmaceutical industry, and legal issues for the Pink Sheet and American Lawyer Media.