Increasing Germline Genetic Testing for Patients With Cancer

Germline testing for hereditary cancer syndromes is underutilized across most health care settings. Using a learning health care approach, the Genomics-enabled Learning Health Systems (gLHS) network aims to evaluate the impact of a suite of implementation strategies to increase germline test ordering by oncology care teams (i.e., mainstreaming) for eligible patients with breast, pancreatic or colorectal cancer. Secondarily, the study will investigate completion of testing by eligible patients, as well as impact on overall rates of germline test ordering in patients with cancer. The network will bundle and deploy different implementation strategies across the clinical sites in three 6-month phases. A maintenance phase after the implementation periods will measure genetic testing rates without any additional implementation strategies to determine persistence of effects. The implementation strategies address clinician-level factors, and thus oncologists and their team members (e.g. advanced practice providers, nurse navigators, case managers) will be the focus of evaluating the impact of implementation strategies. Strategies that will be considered include provider education, audit and feedback reports, facilitation, peer support, and electronic health record (EHR) system optimization to support germline testing. Using the RE-AIM QuEST framework, outcomes will be assessed using mixed methods separately for each eligible cancer type. Data collection from the EHR, other relevant data sources, and qualitative provider feedback will be used to assess ordering and completion of tests and the effect of the implementation strategies on germline testing rates in oncology clinics.