Eleven Years of Oncogenetic Consultations in a Swiss Center: Patient and Testing Characteristics.

Grandjean, Bastien; Scherz, Amina; Rabaglio, Manuela (2023). Eleven Years of Oncogenetic Consultations in a Swiss Center: Patient and Testing Characteristics. The application of clinical genetics, 16, pp. 205-213. Dove Press 10.2147/TACG.S410261

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INTRODUCTION

Oncogenetic counseling has been provided at the University Hospital of Bern since 2004. Since the public announcement by Ms. Angelina Jolie in 2013 that she had undergone bilateral prophylactic mastectomy, other oncogenetic centers have reported an increase in consultations. We conducted a retrospective review of the oncogenetic consultations at our center to evaluate the presence and the consequences of a potential "Angelina Jolie effect" and to characterize this patient population over a decade.

METHODS

All initial oncogenetic consultations between 2005 and 2015 were collected, using electronic records. Demographics, cancer type, testing, and mutation results, as well as consultation rates, were recorded. The yearly trends were analyzed using Joinpoint regression analysis (JPA).

RESULTS

In total, 823 patient cases were included, mostly women (84%), half of them with a positive personal cancer history. A hereditary breast and ovarian cancer (HBOC) risk was the main reason for consultation (72%). Moreover, 22% of patients had a previously detected familial mutation. Two-thirds underwent testing, which yielded a positive test result in 31% of the cases. According to JPA, the consultation rate increased throughout the decade, with a significant upward trend from 2013. Rates of testing and positive results remained stable over time. Most patients (86%) fulfilled the referral criteria of published guidelines.

DISCUSSION

At our center, we found retrospectively a disproportionate growth in the referral rate for HBOC cases compared to other oncological cases after the year 2013, but overall, no change in testing rates was detected.

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