Key clinical point: Guideline authors are not reporting financial conflicts of interest.

Major finding: Of 239 guideline authors, 55 did not disclose industry payments.

Study details: A search of The American Society of Clinical Oncology website to identify clinical practice guidelines and review of The Open Payments database.

Disclosures: Dr. Tibau reports nonfinancial support from Pfizer, Roche, and Ipsen outside the submitted work. Dr. Amir reports personal fees for expert testimony from Genentech/Roche and personal fees for advisory boards from Apobiologix, Agendia, and Myriad Genetics outside the submitted work. No other disclosures were reported.