PARP inhibitors such as olaparib are used for the treatment of metastatic castration-resistant prostate cancer (mCRPC) harboring homologous recombination deficiency (HRD), but a proportion of these patients do not respond to therapy or eventually develop resistance.
The U.S. FDA’s Oncologic Drugs Advisory Committee has recommended by a wide majority that the PARP inhibitor Lynparza (olaparib) in a combination therapy for treating prostate cancer should be restricted to only patients whose tumors have a BRCA mutation.
The U.S. FDA’s Oncologic Drugs Advisory Committee meets April 28 to discuss the future of Astrazeneca plc and Merck & Co. Inc.’s supplemental NDA for Lynparza (olaparib) for an expanded label to treat prostate cancer. It has a few bones to pick. The FDA said it is concerned that the efficacy and safety have not been demonstrated outside of the small population of patients with tumor BRCA mutations and that the addition of olaparib to abiraterone may cause harm in patients who are definitively negative for tumor BRCA mutations.
Triple-negative breast cancer (TNBC) is the most aggressive form of breast cancer, which lacks effective targeted therapies. Poly (ADP-ribose) polymerase (PARP) inhibitors such as olaparib are the go-to therapeutic strategy, but are often tied to resistance.
A Mayo Clinic study demonstrated how the deficiency of the enzyme CDK12 or its regulation by cyclin K causes the expression of mutations related to resistance to endocrine therapy in prostate cancer. Prostate tumors with CDK12 deficiency are more aggressive, recurrent, produce metastases and are associated with castration-resistant prostate cancer (CRPC). CDK12 deficiency impairs DNA repair and increases genomic instability, causing an effect known as homologous recombination deficiency or BRCAness.
Myriad Genetics Inc. is launching a new suite of genetic tests designed for personalizing chemotherapy treatment. The Precise oncology offering includes Myriad’s precise tumor molecular profile test and two companion diagnostic tests, Mychoice CDx and Bracanalysis CDx. The company said the combination of germline, somatic and companion testing aims to maximize information for oncologists as they assign individual treatment plans. Results from each test are gathered as a single report accessed on an online portal.
Astrazeneca plc and Merck & Co. Inc. have data for a new indication for their blockbuster PARP inhibitor class drug Lynparza (olaparib) in advanced prostate cancer in combination with standard abiraterone therapy. The companies said the Propel phase III study testing Lynparza in combination with abiraterone showed a statistically significant and clinically meaningful improvement in radiographic progression-free survival in first-line metastatic castration-resistant prostate cancer vs. standard abiraterone care.
The American Society for Clinical Oncology’s (ASCO) virtual annual meeting began June 3 with the release of late-breaking abstracts, including LBA-1 on “Olympia: A phase 3, multicenter, randomized, placebo-controlled trial of adjuvant olaparib after (neo)adjuvant chemotherapy in patients with germline BRCA1 and BRCA2 mutations and high risk HER2-negative primary breast cancer.”
The American Society for Clinical Oncology’s (ASCO) virtual annual meeting began June 3 with the release of late-breaking abstracts, including LBA-1 on “Olympia: A phase 3, multicenter, randomized, placebo-controlled trial of adjuvant?olaparib?after (neo)adjuvant chemotherapy in patients with germline BRCA1 and BRCA2 mutations and high risk HER2-negative primary breast cancer.”
Just days after Clovis Oncology Inc.'s Rubraca (rucaparib) became the first PARP inhibitor approved by the FDA to treat certain cases of metastatic prostate cancer (mCPRC) in third-line care, the agency granted an even broader label in the indication to its first-in-class competitor, Lynparza (olaparib). Endorsement of second-line use of Lynparza in mCPRC and an overall survival (OS) benefit listed in its updated label will help rapidly establish it as "the drug of choice in the [second] line, leaving little commercial opportunities for Rubraca downstream," SVB Leerink analyst Andrew Berens said.