TUMOSPEC: A Nation-Wide Study of Hereditary Breast and Ovarian Cancer Families with a Predicted Pathogenic Variant Identified through Multigene Panel Testing.

Fiche publication

Date publication

juillet 2021




Membres identifiés du Cancéropôle Est :
Dr MAUGARD Christine, Dr COLLONGE-RAME Marie-Agnès, Dr NAMBOT Sophie

Tous les auteurs :
Lesueur F, Eon-Marchais S, Bonnet-Boissinot S, Beauvallet J, Dondon MG, Golmard L, Rouleau E, Garrec C, Martinez M, Toulas C, Nguyen TD, Brayotel F, Crivelli L, Maugard CM, Bubien V, Sevenet N, Gesta P, Chieze-Valero S, Nambot S, Goussot V, Mari V, Popovici C, Prieur F, Morin-Meschin ME, Tinat J, Lortholary A, Dreyfus H, Bidart M, Collonge-Rame MA, Mozelle-Nivoix M, Gladieff L, Giraud S, Boutry-Kryza N, Chiesa J, Denizeau P, Bignon YJ, Uhrhammer N, Cohen-Haguenauer O, Vilquin P, Mailliez A, Coupier I, Rey JM, Lacaze E, Béra O, Colas C, Coulet F, Delnatte C, Houdayer C, Lasset C, Lemonnier J, Longy M, Noguès C, Stoppa-Lyonnet D, Vaur D, Andrieu N, Caron O


Assessment of age-dependent cancer risk for carriers of a predicted pathogenic variant (PPV) is often hampered by biases in data collection, with a frequent under-representation of cancer-free PPV carriers. TUMOSPEC was designed to estimate the cumulative risk of cancer for carriers of a PPV in a gene that is usually tested in a hereditary breast and ovarian cancer context. Index cases are enrolled consecutively among patients who undergo genetic testing as part of their care plan in France. First- and second-degree relatives and cousins of PPV carriers are invited to participate whether they are affected by cancer or not, and genotyped for the familial PPV. Clinical, family and epidemiological data are collected, and all data including sequencing data are centralized at the coordinating centre. The three-year feasibility study included 4431 prospective index cases, with 19.1% of them carrying a PPV. When invited by the coordinating centre, 65.3% of the relatives of index cases (5.7 relatives per family, on average) accepted the invitation to participate. The study logistics were well adapted to clinical and laboratory constraints, and collaboration between partners (clinicians, biologists, coordinating centre and participants) was smooth. Hence, TUMOSPEC is being pursued, with the aim of optimizing clinical management guidelines specific to each gene.

Mots clés

cancer risk estimate, genetic predisposition to breast and ovarian cancer, multigene panels, penetrance of pathogenic variants


Cancers (Basel). 2021 Jul 21;13(15):