New Trials in Gyn Cancers: Could Your Patient Benefit?

Several new clinical trials in gynecologic cancers have started enrolling recently. Perhaps one of your patients is eligible to take part?

Persistent or recurrent endometrial cancer or any advanced solid gynecologic tumor with appropriate ATR mutations. Patients with one of these diagnoses may be eligible to join a phase 2, randomized, open-label study of an experimental drug called ART0380. ART0380 inhibits the ability of cancer cells to repair DNA damage by targeting a DNA repair kinase called ATR (ataxia telangiectasia–mutated and Rad3-related) protein, which is faulty in some tumors. The hope is that ART0380 will overwhelm the inadequate DNA repair processes of these cancer cells while sparing the more robust DNA repair in healthy cells. 

All participants in the trial will take daily oral ART0380 until disease progression, withdrawal of consent, or unacceptable toxicity, whichever happens first. Some individuals will receive the treatment for 3 weeks out of every 4. Sites in California, Illinois, Massachusetts, New York, Oklahoma, Pennsylvania, Rhode Island, and France started recruiting 60 participants with endometrial cancer or any solid tumor in September 2023. The primary outcome is objective response rate. Overall survival is a secondary measure and quality of life (QOL) is not assessed. More details at ClinicalTrials.gov

Maurie Markman, MD, president of medicine and science at City of Hope, Atlanta, who is not involved in this trial, explained that because ” a meaningful proportion of this population may have a defect in this DNA repair mechanism,” this hypothesis seems “worthy of clinical exploration.” 

Cancer of the endometrium, cervix, vagina, or vulva. Women with one of these types of cancer who can read and understand English or Spanish can join a randomized, open-label phase 2 trial to determine whether Reiki therapy can reduce pain and distress associated with brachytherapy. 

Reiki is a complementary therapy that involves a Reiki practitioner holding their hands lightly on or above the patient’s body for several minutes. Some hospitals in the US and the UK offer Reiki as a relaxation aid, although high-quality science is lacking. 

In this study, one group of participants will each undergo Reiki in a quiet clinic room during the lengthy waiting period between placement of the vaginal cylinder and infusion of the radiation source, which is a time of anxiety and discomfort for many women. A second group of women will simply lie and wait in a clinic room, if desired accompanied by a friend or family member. 

The Huntsman Cancer Institute, Salt Lake City, Utah, started recruiting its 68 participants in October 2023. The primary outcome is self-reported anxiety. The secondary outcomes are other validated measures of anxiety, pain, and depression. Overall survival and broader measures of QOL will not be assessed. More details at ClinicalTrials.gov

Markman said that the benefits of Reiki may be “nothing more than a placebo effect.” But he highlighted the novelty of conducting a randomized trial to scientifically test Reiki’s “widely applied (without any real evidence) ‘integrative medicine’ approach to symptom management.”

Unresectable or metastatic endometrial cancer with deficient mismatch repair /high microsatellite instability. People in this clinical situation whose disease has progressed after one or two lines of prior chemotherapy, including platinum-based treatment, may be interested in an open-label nonrandomized, phase 2 investigation of bispecific antibody acasunlimab in combination with pembrolizumab (Keytruda). 

Acasunlimab stimulates T-cell antitumor activity as well as blocking programmed death ligand 1 (PD-L1) and is being tested in several types of solid-tumor cancer. For up to 2 years, all participants will receive intravenous (IV) infusions of the drug combination. Study sites in Florida and Europe opened in January 2024, ready for 80 participants. The primary outcome is objective response rate. Overall survival will not be assessed. More details at ClinicalTrials.gov

“In the absence of a randomized population to compare treatment outcomes, the results of this trial will likely provide limited data upon which to determine the clinical benefits of this novel drug combination strategy,” said Markman. However, he added, “the results will be helpful in assessing the potential toxicity of this approach.”

Recurrent or metastatic endometrial cancer with proficient mismatch repair. Women with this diagnosis who have progressed after one prior platinum chemotherapy regimen in any setting may wish to consider a randomized, triple-blind, phase 2 trial of pembrolizumab plus favezelimab. Favezelimab, which blocks the lymphocyte activation gene 3 (LAG3), appears to boost the antitumor activity of programmed cell death protein 1 (PD-1) inhibition in other cancers such as classic Hodgkin lymphoma. 

In the trial, participants will be assigned to one of four groups. One group will receive 17 doses of the combination treatment IV every 3 weeks — three doses in the neoadjuvant period and 14 as adjuvant therapy. A second group of individuals will receive IV pembrolizumab monotherapy on the same schedule. A third will be given up to 35 doses of the combo therapy every 3 weeks plus a daily capsule of lenvatinib (Lenvima). The fourth group will receive 35 doses of pembrolizumab plus daily lenvatinib. 

Sites in North Carolina, New Jersey, Pennsylvania, and four countries other than the US started recruiting 60 participants with a solid tumor in September 2023. Pathologic complete response and objective response rate are the primary endpoints. Overall survival over approximately 3.5 years is a secondary endpoint, and QOL will not be measured. More details at ClinicalTrials.gov

Unresectable advanced or metastatic HER2-positive endometrial or ovarian cancer. Adults with one of these diagnoses in whom failed platinum-based therapy has failed may enroll in an open-label, phase 2 study to see whether their disease will respond to the antibody-drug conjugate disitamab vedotin. Everyone in the trial will receive IV disitamab vedotin every 2 weeks for up to approximately 5 years. 

Study sites in California, Connecticut, Michigan, Minnesota, Montana, New York, Ohio, Texas, and Canada began welcoming their 190 participants with one of a range of solid cancers in November 2023. The primary outcome is objective response rate. Overall survival is a secondary measure and QOL will not be tracked. More details at ClinicalTrials.gov

High-risk locally advanced cervical cancer. Girls and women older than 14 years with this cancer that has not progressed after platinum-based chemoradiation are sought for a randomized, quadruple-blind, phase 3 trial to determine whether the investigational immunotherapy volrustomig can slow disease progression. Volrustomig targets PD-1 and cytotoxic T lymphocyte protein 4 (CTLA4) and is being tested in a wide range of solid cancers. 

For approximately 3 years or until disease progression or death, whichever happens first, half of participants will receive IV infusions of volrustomig while the others will receive saline. Asian research sites started seeking the study’s 1000 participants in September 2023, while centers in 12 US states and eight other countries are gearing up for patient enrollment. Progression-free survival in participants with PD-L1 expression is the primary endpoint; overall survival and QOL are secondary endpoints. More details at ClinicalTrials.gov

All trial information is from the National Institutes of Health US National Library of Medicine (online at ClinicalTrials.gov). Markman declared he is not involved with these trials.