I. To provide a blinded reference set of cancer versus (vs.) non-cancer blood samples that will be used to validate assays for inclusion in a prospective clinical trial focused on utility of blood-based multi-cancer early detection.
I. Evaluate test performance at the time of initial cancer diagnosis by tumor type.
II. Evaluate test performance at the time of initial cancer diagnosis by clinical stage.
Participants complete a questionnaire at baseline. Participants undergo collection of blood samples at registration and at 12 months after registration. Patients with a cancer diagnosis may undergo collection of tissue samples at registration and 12 months after registration.
After completion of study, participants are followed up at 1 year.
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