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PD-L1 Biomarker News

The latest news on PD-L1 biomarkers for oncology professionals.

New data on Kadcyla and Tecentriq will help doctors further refine precision medicine options for breast cancer patients with unmet needs.

Physicians can now use the Dako PD-L1 IHC 22C3 pharmDx assay to identify urothelial carcinoma patients who may benefit from the anti-PD1 immunotherapy.

With sequence data for more than 118,000 tumors profiled at Foundation Medicine, investigators tracked PDL1 amplification prevalence and possible treatment implications.

At ASCO, researchers presented on the WINTHER trial, which despite setbacks showed that both DNA and RNA analysis can be used to guide personalized treatment strategies.

Presentations largely reflected negatively on the utility of PD-L1 for stratifying response, but pivotal new data on tumor mutational burden as assessed by Foundation Medicine's genomic sequencing panel.

Patients with PD-L1-expressing gastric or gastroesophageal junction tumors can now be identified for potential treatment with Keytruda using Agilent's assay.

The changes include recommendations for first line immunotherapy in patients with high PD-L1 expression, and clarification on use of targeted therapies.

Collaborators have created an atlas that compares available PD-L1 IHC assays and reveals areas of debate, including challenges encountered by clinicians.

The Ventana PD-L1 assay was approved as a complementary diagnostic for bladder cancer patients being considered for treatment with the immunotherapy Imfinzi. 

The recent failure of Bristol-Myers Squibb's lung cancer immunotherapy to meet its primary endpoint demonstrates the challenge of working with imperfect biomarkers.

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