PREVALENCE ET PRONOSTIC DES CANCERS DIFFERENCIES DE LA THYROIDE ASSOCIES AUX HYPERTHYROIDIES

LILLE2-BU Santé-Recherche (593502101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

LES HYPERTHYROIDIES LIEES A L'AMIODARONE (A PROPOS DE 70 OBSERVATIONS)

LILLE2-BU Santé-Recherche (593502101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Should the GCM2 gene be tested when screening for familial primary hyperparathyroidism?

International audienceObjective: Primary hyperparathyroism (PHPT) is a disease with either sporadic or inherited presentation. Germline mutations responsible for this disease can be found in different genes, the most frequently involved being MEN1, CDC73 = HRPT2 and CASR. During the last few years, new genes have been described as responsible for the development of PHPT such as GCM2. These genes are not systematically included in PHPT genetic screening yet. The aim of this work was to assess the importance of GCM2 genetic analysis in PHPT to determine if this gene should be included in gene panel investigated for this disease. Design and methods: The TENGEN network (French Oncogenetic Network of Neuroendocrine Tumors) collected and interpreted allelic variants according to the clinical characteristics of the GCM2-positive patients identified through genetic testing performed in French laboratories (713 patients with PHPT). Results: From 713 patients with PHPT included in this study, 85 (6.6%) carried at least one GCM2 variant. A total of 12 variants classified as uncertain significance or likely pathogenic were reported in 47 patients. Their mean age at PHPT diagnosis was 49 years. Additionally, the investigation of a large family showed that GCM2 variants could be associated with low penetrance. Conclusion: We provide a description and interpretation for GCM2 variants identified in a French population. We suggest that this gene should be included in genetic screening of patients with PHPT and propose the follow-up of asymptomatic patients carrying such variants for calcemia

Evaluation of the occurrence of the manifestations of Carney complex in a french cohort of 70 patients during a three years standardized follow-up

International audienceIntroductionThe Carney Complex is a multiple endocrine and non endocrine neoplasia mostly due to PRKAR1A mutations. Spectrum of manifestations and genotypephenotype correlations have been previously described by retrospective studies. A prospective study evaluating the occurrence of the different manifestations was needed to precise the optimum follow-up.MethodsMulti-center national prospective study (Clinical Trials NCT00668291) including 70 patients mutated or wild-type for PRKAR1A followed prospectively during 3years with screening of the different manifestations by annual clinical, biological and radiological evaluation.ResultsThe cohort was compound of 50 females and 20 males with a mean age at 35.4years C/K16.7. Prevalence of cardiac myxomas at the end of the follow-up was 22.9% with newly diagnosis during the study period for 3 patients. Fortyfour% of patients with myxomas had related stroke attack and 56% had recurrences. Median delay between recurrences was 3.8years (minimummaximum: 0.8–24). Primary pigmented adrenal nodular disease was diagnosed in 57.1%. Skin manifestations, abnormal somatotroph hormonal tests and thyroid tumors were observed respectively in 58.6, 21.4 and 12.9%. Four% had melanotic shwannomas confirmed by histology. Spinal magnetic resonance imagery revealed lesions for 8.6%. Characteristic multiples calcified tumors on testicular ultrasonography were present in 35% of male patients. Ten% of female patients had surgery for breast myxoma or adenofibroma. Forty% had lesions classified ACR2-3 at mammography. Interestingly, four patients (8%) had breast adenocarcinomas (11.1% of female older than 30years). Eighty-three% of patients had PRKAR1A mutations. Patients carrying the mutation c.709-7del6 (34% of the cohort) had no manifestation or phenotype restricted to adrenal, lentigines and abnormal somatotroph test.ConclusionThe penetrance of the disease is high after screening except for patient carrying the c.709-7del6 mutation. This study highlights the importance of an annual follow-up, with especially annual cardiac imaging for patients with history of cardiac myxomas and earlier and regular senologic evaluation.DOI: 10.1530/endoabs.49.GP12

Local-regional recurrence of sporadic or syndromic abdominal extra-adrenal paraganglioma : incidence, characteristics, and outcome

Background: Operative excision of abdominal extra-adrenal paragangliomas (EAPs) does not preclude the late development of local-regional recurrence. We describe the incidence, characteristics, and outcome of this rarely reported feature. Methods: Retrospective analysis of local-regional recurrence that occurred during follow-up of 51 consecutive patients operated for a sporadic (n = 26) or hereditary (n = 25) EAP. Results: Seven patients with a sporadic or syndromic EAP (n = 4: von Hippel-Lindau syndrome and SDHB, SDHC, and SDHD gene mutations) underwent reoperation for a local-regional recurrence after a median time of 46 months (interquartile range [IQR], 16-100). The Kaplan-Meier estimated incidence of local-regional recurrence ( standard error of the mean) reached 1.5% +/- 7% at 5 years and 23% +/- 9% after 10 years. Recurrent EAPs were all secreting and 38% provoked clinical symptoms. New lesions were smaller than the primary EAP (P = .01) and more often associated with lymph node metastases (43% vs 4%, P = .01). Operative excision seemed complete in 5 patients. Clinical remission was maintained in 4 Patients after a median follow-up of 5 7 months (IQA 22-102). Conclusion: Local-regional recurrence of sporadic and syndromic EAPs is frequent and may be delayed beyond 10 years, requiring lifelong follow-up after the initial operation. Men technically feasible, operative excision can lead to prolonged remission

Long-term Follow-up of MEN1 Patients Who Do Not Have Initial Surgery for Small ≤2 cm Nonfunctioning Pancreatic Neuroendocrine Tumors, an AFCE and GTE Study

IF 9.203International audienceObjective: To report long-term follow-up of patients with multiple endocrine neoplasia type 1 (MEN1) and nonfunctioning pancreatic neuroendocrine tumors (NF-PET).Background: Pancreaticoduodenal tumors occur in almost all patients with MEN1 and are a major cause of death. The natural history and clinical outcome are poorly defined, and management is still controversial for small NF-PET.Methods: Clinical outcome and tumor progression were analyzed in 46 patients with MEN1 with 2 cm or smaller NF-PET who did not have surgery at the time of initial diagnosis. Survival data were analyzed using the Kaplan-Meier method.Results: Forty-six patients with MEN1 were followed prospectively for 10.7 ± 4.2 (mean ± standard deviation) years. One patient was lost to follow-up and 1 died from a cause unrelated to MEN1. Twenty-eight patients had stable disease and 16 showed significant progression of pancreaticoduodenal involvement, indicated by increase in size or number of tumors, development of a hypersecretion syndrome, need for surgery (7 patients), and death from metastatic NF-PET (1 patient). The mean event-free survival was 13.9 ± 1.1 years after NF-PET diagnosis. At last follow-up, none of the living patients who had undergone surgery or follow-up had evidence of metastases on imaging studies.Conclusions: Our study shows that conservative management for patients with MEN1 with NF-PET of 2 cm or smaller is associated with a low risk of disease-specific mortality. The decision to recommend surgery to prevent tumor spread should be balanced with operative mortality and morbidity, and patients should be informed about the risk-benefit ratio of conservative versus aggressive management when the NF-PET represents an intermediate risk