The GPRC5A frameshift variant c.183del is not associated with increased breast cancer risk in BRCA1 mutation carriers. Issue 7 (6th January 2019) - Klaschik, Kristina; Hauke, Jan; Neidhardt, Guido; Tränkle, Christian; Surowy, Harald M.; Heilmann‐Heimbach, Stefanie; Rappl, Gunter; Mangold, Elisabeth; Arnold, Norbert; Niederacher, Dieter; Sutter, Christian; Burwinkel, Barbara; et al.