GeneHome - a Novel Model to Deliver Care to Individuals with Genetic Predisposition to Cancer.

Genetic testing for hereditary cancer predisposition is more widely available, resulting in more patients being identified as carriers of pathogenic variants (PV) of cancer susceptibility genes. PV carriers may be at high risk for multiple cancers of different organ systems. Traditional high-risk cancer screening is often organ specific and conducted separately by specialists. However, with many genes associated with 3 or more types of cancer risks, coordination of such cancer screening can be overwhelming for patients and providers. At Moffitt Cancer Center (MCC), GeneHome clinic functions as a "home" to conduct and coordinate prevention, screening, counseling, and education for individuals carrying germline genetic PVs across the entire spectrum of cancer genes. The screening includes, but is not limited to, history review, physical examination, image studies, blood tests, urine tests, and endoscopy. GeneHome is a novel model for genetic high-risk cancer surveillance and has grown in 4 years since establishment. We sought to study various characteristics of the patient population it serves, common themes in referral patterns and evolution of the clinic since its inception. A total of 821 patients were seen over 42 months, encompassing PV carriers of 46 genes. Patients were 84.9% female and 13.3% male. Most PVs were of BRCA1 and BRCA2. Most patients had private insurance, and most were from Florida. Annual increase in patient visits was over 74.7% over the last year. Overall, GeneHome has been well accepted by providers and patients and is a valuable service for patients with a genetic predisposition to cancer.

The Breast Cancer Screening and Timing of Breast MRI-Experience in a Genetic High-Risk Screening Clinic in a Comprehensive Cancer Center.

For women with genetic risk of breast cancer, the addition of screening breast MRI to mammography has become a standard. The order and interval of annual imaging can be variable among providers. To evaluate the clinical implications related to the timing, we conducted a chart review on a cohort of women (N = 276) with high-risk (BRCA1, BRCA2, CDH1, PTEN and TP53) and moderate high-risk (ATM and CHEK2) predisposition to breast cancer in a 48-month follow up. The estimated MRI detection rate in the entire group is 1.75% (18 per 1000 MRI tests). For the high-risk group, the estimated rate is 2.98% (30 per 1000 MRI tests). Many women discovered their genetic risk at an age much older (average age of the high-risk group was 48 years) than the age recommended to initiate enhanced screening (age 20 to 25 years). In total, 4 of the 11 primary breast cancers detected were identified by screening MRI within the first month after initial visit, which were not detected by previous mammography, suggesting the benefit of initiating MRI immediately after the discovery of genetic risk. Breast screening findings for women with Lynch syndrome and neurofibromatosis type 1 were also included in this report.