FDA grants accelerated approval to new treatment for advanced ovarian cancer

FDAThe U.S. Food and Drug Administration has granted accelerated approval to Rubraca (rucaparib) to treat women with a certain type of ovarian cancer. Rubraca is approved for women with advanced ovarian cancer who have been treated with two or more chemotherapies and whose tumors have a specific gene mutation (deleterious BRCA) as identified by an FDA-approved companion diagnostic test.

"Today's approval is another example of the trend we are seeing in developing targeted agents to treat cancers caused by specific mutations in a patient's genes," said Richard Pazdur, M.D., director of the Office of Hematology and Oncology Products in the FDA’s Center for Drug Evaluation and Research and acting director of the FDA's Oncology Center of Excellence. "Women with these gene abnormalities who have tried at least two chemotherapy treatments for their ovarian cancer now have an additional treatment option."

The National Cancer Institute estimates that 22,280 women will be diagnosed with ovarian cancer in 2016 and an estimated 14,240 will die of this disease. Approximately 15 to 20 percent of patients with ovarian cancer have a BRCA gene mutation.

BRCA genes are involved with repairing damaged DNA and normally work to prevent tumor development. However, mutations of these genes may lead to certain cancers, including ovarian cancers. Rubraca is a poly ADP-ribose polymerase (PARP) inhibitor that blocks an enzyme involved in repairing damaged DNA. By blocking this enzyme, DNA inside the cancerous cells with damaged BRCA genes may be less likely to be repaired, leading to cell death and possibly a slow-down or stoppage of tumor growth.

Today, the FDA also approved the FoundationFocus CDxBRCA companion diagnostic for use with Rubraca, which is the first next-generation-sequencing (NGS)-based companion diagnostic approved by the agency. The NGS test detects the presence of deleterious BRCA gene mutations in the tumor tissue of ovarian cancer patients. If one or more of the mutations are detected, the patient may be eligible for treatment with Rubraca.

The safety and efficacy of Rubraca were studied in two, single-arm clinical trials involving 106 participants with BRCA-mutated advanced ovarian cancer who had been treated with two or more chemotherapy regimens. BRCA gene mutations were confirmed in 96 percent of tested trial participants with available tumor tissue using the FoundationFocus CDxBRCA companion diagnostic. The trials measured the percentage of participants who experienced complete or partial shrinkage of their tumors (overall response rate). Fifty-four percent of the participants who received Rubraca in the trials experienced complete or partial shrinkage of their tumors lasting a median of 9.2 months.

Common side effects of Rubraca include nausea, fatigue, vomiting, low levels of red blood cells (anemia), abdominal pain, unusual taste sensation (dysgeusia), constipation, decreased appetite, diarrhea, low levels of blood platelets (thrombocytopenia) and trouble breathing (dyspnea). Rubraca is associated with serious risks, such as bone marrow problems (myelodysplastic syndrome), a type of cancer of the blood called acute myeloid leukemia and fetal harm.

The agency approved Rubraca under its accelerated approval program, which allows approval of a drug to treat a serious or life-threatening disease or condition based on clinical data showing the drug has an effect on a surrogate (substitute) endpoint that is reasonably likely to predict clinical benefit. The sponsor is continuing to study this drug in patients with advanced ovarian cancer who have BRCA gene mutations and in patients with other types of ovarian cancer. The FDA also granted the Rubraca application breakthrough therapy designation and priority review status. Rubraca also received orphan drug designation, which provides incentives such as tax credits, user fee waivers and eligibility for exclusivity to assist and encourage the development of drugs intended to treat rare diseases.

Rubraca is marketed by Clovis Oncology, Inc. based in Boulder, Colorado. The FoundationFocus CDxBRCA companion diagnostic is marketed by Foundation Medicine, Inc. of Cambridge, Massachusetts.

The FDA, an agency within the U.S. Department of Health and Human Services, protects the public health by assuring the safety, effectiveness, and security of human and veterinary drugs, vaccines and other biological products for human use, and medical devices. The agency also is responsible for the safety and security of our nation’s food supply, cosmetics, dietary supplements, products that give off electronic radiation, and for regulating tobacco products.

Most Popular Now

Positive Phase 1 data from mRNA-based individualiz…

BioNTech SE (Nasdaq: BNTX, "BioNTech") announced initial data from an ongoing investigator-initiated first-in-human Phase 1 study evaluating the safety and tolerability o...

FDA approves RIABNI™ (rituximab-arrx), a biosimila…

Amgen (NASDAQ:AMGN) today announced that the U.S. Food and Drug Administration (FDA) has approved RIABNI™ (rituximab-arrx), a biosimilar to Rituxan®, in combination with ...

Pfizer to invest $120 million to produce COVID-19 …

Pfizer Inc. (NYSE: PFE) announced today that it will further strengthen its commitment to United States manufacturing with a $120 million investment at its Kalamazoo, Mic...

Proteomic study of 2,002 tumors identifies 11 pan-…

A new study that analyzed protein levels in 2,002 primary tumors from 14 tissue-based cancer types identified 11 distinct molecular subtypes, providing systematic knowled...

A new technology offers treatment for HIV infectio…

A new study from Tel Aviv University offers a new and unique treatment for AIDS which may be developed into a vaccine or a one time treatment for patients with HIV. The s...

Sanoff offers perspective on a promising rectal ca…

UNC Lineberger Comprehensive Cancer Center's Hanna K. Sanoff, MD, MPH, is the author of a viewpoint in the New England Journal of Medicine that provides a perspective on ...

Boehringer Ingelheim signs option to acquire Truti…

Boehringer Ingelheim announced the signing of an option to acquire Trutino Biosciences Inc. (the "Transaction"), a San Diego-based biotech company. Trutino Biosciences...

Broadly neutralizing antibodies could provide immu…

Two broadly neutralizing antibodies show great promise to provide long-acting immunity against COVID-19 in immunocompromised populations according to a paper published Ju...

Novel drug combo activates natural killer cell imm…

Most skin cancer drugs that activate the immune system work by triggering immune cells, called T cells, to attack tumors, but when T cells are activated for too long, the...

Novartis announces Nature Medicine publication of …

Novartis announced that Nature Medicine published final results from both the two- and three-copy cohorts of the completed Phase 3 SPR1NT trial as separate companion manu...

COVID-19 rebound after taking Paxlovid likely due …

Paxlovid is the leading oral medication for preventing severe cases of COVID-19 in high-risk individuals. However, symptoms returned in some patients after treatment was ...

Biomarkers found that could be drug targets agains…

Biomarkers that could be targets for novel drugs to treat glioblastoma brain tumors have been identified by investigators at Georgetown Lombardi Comprehensive Cancer Cent...