BACKGROUND: Present data are highly suggestive but do not unequivocally prove the cosegregation of germ-line CDH1 mutations with inherited invasive lobular breast cancer (ILBC). METHODS: Two Caucasian families with 6 pathologically confirmed ILBC cases but no diffuse gastric cancer (DGC) were identified in our oncogenetics consultations. Screening for mutations of CDH1, BRCA1, and BRCA2 genes was performed on blood samples. When available, loss of heterozygosity (LOH) and immunohistochemistry (IHC) analyses were performed on tumor samples. RESULTS: No BRCA1 or BRCA2 mutation was found. Deleterious CDH1 germ-line mutations c.283C>T and c.1582del were found in all the 4 living women with ILBC in family 1 and family 2, respectively. The mutation c.283C>T was also present in a healthy 71-year-old male and 2 obligate carriers in family 1. No DGC was observed in the 2 families. Loss of the wildtype CDH1 allele in 1 of the breast tumors was confirmed by LOH and IHC studies, in accordance with the ''2-hit'' model of tumor suppressor genes. CONCLUSIONS: Germline CDH1 mutation can be cosegregated with ILBC in the absence of DGC. Present data do not support recommendation of prophylactic gastrectomy in CDH1 germline mutation carriers with ILBC. Cancer 2011;117:3112-

BackgroundDeleterious mutations in the BRCA genes are responsible for a small, but significant, proportion of breast and ovarian cancers (5 - 10 %). Proof of de novo mutations in hereditary breast/ovarian cancer (HBOC) families is rare, in contrast to founder mutations, thousands of years old, that may be carried by as much as 1 % of a population. Thus, if mutations favoring cancer survive selection pressure through time, they must provide advantages that compensate for the loss of life expectancy.MethodThis hypothesis was tested within 2,150 HBOC families encompassing 96,325 individuals. Parameters included counts of breast/ovarian cancer, age at diagnosis, male breast cancer and other cancer locations. As expected, well-known clinical parameters discriminated between BRCA-mutated families and others: young age at breast cancer, ovarian cancer, pancreatic cancer and male breast cancer. The major fertility differences concerned men in BRCA-mutated families: they had lower first and mean age at paternity, and fewer remained childless. For women in BRCA families, the miscarriage rate was lower. In a logistic regression including clinical factors, the different miscarriage rate and men's mean age at paternity remained significant.ResultsFertility advantages were confirmed in a subgroup of 746 BRCA mutation carriers and 483 non-carriers from BRCA mutated families. In particular, female carriers were less often nulliparous (9.1 % of carriers versus 16.0 %, p = 0.003) and had more children (1.8 ± 1.4 SD versus 1.5 ± 1.3, p = 0.002) as well as male carriers (1.7 ± 1.3 versus 1.4 ± 1.3, p = 0.024).ConclusionAlthough BRCA mutations shorten the reproductive period due to cancer mortality, they compensate by improving fertility both in male and female carriers.

How long counselees retain the information given during their genetic consultation is of major importance. To address this issue, we conducted a survey among the 3500 families that have been offered genetic counseling at our Center since 1988. In August 2007, we mailed a questionnaire to a representative subset of 579 persons belonging to breast/ovarian or colon cancer families seen in the last 10 years, either carrying an identified mutation or not. Targeted topics included the meaning of hereditary predisposition, the medical prevention related to the familial risk, the steps to undertake for a new family member to enter the genetic testing program and general knowledge of hereditary predisposition to cancer. A total of 91 randomized non-respondents were sent a second, more inciting letter, in order to assess any non-response bias. Overall, 337 questionnaires were collected: response rate was 58%. Standardized average knowledge was 7.28±1.52 of 10. Scores were lowest concerning medical prevention. The level of knowledge decreased with age (P<10−6), but increased with educational level (P<10−5) and mutation status (P=0.01). Surprisingly, no erosion of patients' knowledge over the time was observed (P=0.41). Among persons at hereditary risk of colon cancer, the level of knowledge tended to improve with time, in contrast to the breast/ovarian group (P=0.017). Among persons with a familial risk of breast/ovarian or colon cancer, a renewal of oncogenetic counseling does not seem necessary to maintain the level of specific knowledge. Measures to help patients follow their medical prevention, as organizing or checking their medical examinations, seem indicated.

BackgroundYoung women exposed to a high hereditary breast and ovarian cancer (HBOC) risk are particularly vulnerable. They are ignored by health prevention measures but exposed to a stream of contradictory information (medicine, media, Internet). They may feel concerned about surgical prevention issues at a key moment of their identity construction (self, relationship, sexuality). We designed a special psychoeducational intervention to help these women cope better with these difficulties.Methods/designThe BRACAVENIR study consists of a prospective, randomized superiority phase II trial with a wait list control group. Participants are childless young female counselees (aged 18–30 years) seen at the oncogenetics department of the Centre Jean Perrin and belonging to HBOC families either with or without BRCA mutations. They will be invited to attend a weekend group session at a spa resort and to participate in short expert conferences and focus group activities (group sharing, Moreno role game) supervised by a psychotherapist. Two sessions separated by a 6-month delay (wait list) will enable us to evaluate the intervention’s effect by comparing questionnaire scores between the 6-month time points. The main endpoint is an increase of the Herth Hope Index by at least 1 SD. Secondary endpoints are self-esteem, anxiety trait, anxiety state, coping, and quality of life. With a one-sided α = 0.05 and β = 0.20, 12 participants will be needed by group, plus an additional 2 in anticipation of dropouts. Participants will be randomized 1:1 to the first or the second session so that the groups will be comparable.DiscussionThe intent of this trial is to bridge the gap on a psychosocial level in these young women with HBOC. A particularity of the design is the use of a waiting list, which should allow for avoiding major bias. The intervention consists of a short session that could be proposed to other young counselees if successful. The results may bring complementary information to facilitate the intervention and also influence the contents of the oncogenetic consultation.Trial registrationEthics committee CPP SUD-EST-6: IRB00008526. Registered on 18 March 2016.ClinicalTrials.gov identifier: NCT02705924. Registered on 2 March 2016.Electronic supplementary materialThe online version of this article (doi:10.1186/s13063-016-1642-4) contains supplementary material, which is available to authorized users.

Background In families with high risk of hereditary breast/ovarian cancer (HBOC), women before age 30 do not yet undergo clinical screening, but they are exposed to contradictory information from diverse sources. They may be presented with surgical prevention options at a key moment of their identity construction, the start of a marital relationship and/or at the onset of procreation projects. We tested an original psychoeducational intervention to help these women better cope with these difficult issues. Methods Seven young female counselees (26.4 ± 2.9 years [23–30]) from the Oncogenetics Department at Jean Perrin Comprehensive Cancer Center were enrolled. A weekend group workshop composed of short conferences, group sharing and role playing activities was supervised by a psychotherapist. A longitudinal analysis of questionnaires over one year of follow-up was performed. The Herth Hope Inventory was evaluated, as well as self-esteem, anxiety, perceived control, coping, and quality of life. Participants’ comments were collected by a genetic counselor throughout the workshop. Results All participants were BRCA mutation carriers and six had lived with a close relative affected by breast/ovarian cancer. Hope, self-esteem and quality of life increased during the year after the workshop ( p = 0.0003). Coping by focus on the problem increased in the first 6 months ( p = 0.011) and returned to baseline values at one year, while coping by focus on emotions decreased steadily ( p = 0.021). Debriefing from the workshop highlighted the new medical opportunities proposed and the challenges these young women face, such as whether to have prophylactic surgery, and if so before or after having children, and how surgery might affect their relationship with their partner. Conclusion A tailored two-day psychoeducational workshop may be sufficient to improve the way young women with BRCA mutations deal with the implications of HBOC risk. Trial registration BRACAVENIR was registered in ClinicalTrials.gov with no NCT02705924. Electronic supplementary material The online version of this article (10.1186/s13053-019-0107-7) contains supplementary material, which is available to authorized users.

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