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Acromegaly in remission: a view from the partner

Rachel Fourneaux, Marie Vermalle, Frederique Albarel, Isabelle Morange, Thomas Graillon, Vincent Amodru, Thomas Cuny, Henry Dufour, Thierry Brue, and Frederic Castinetti

Objective

A relative can be an asset in dealing with chronic illnesses, such as acromegaly, where quality of life (QoL) is altered even after remission. However, it has been shown that quality of life of caregivers can also be impacted. Our main objective was to compare the perception of acromegaly in remission in the patient–relative dyad.

Methods

In this observational study, 27 patients in remission and relatives were first asked to complete QoL, anxiety/depression and coping strategy questionnaires. Then, the patient’s body image and self-esteem were evaluated from both the patient’s and the relative’s point of view using the same questionnaires with modified instructions.

Results

Relatives had overall an accurate estimation of patient body image using the Figure Rating Scale by Stunkard. However, there were wide variations between the patient’s and the relative’s responses regarding self-esteem and body perception. The QoL of relatives was not altered and was significantly higher in the social domain than for the patient.

Conclusions

Our results show that relatives require education concerning all the steps involved in the management of acromegaly, as they likely do not fully understand the sequelae of acromegaly.

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IGSF1 mutations are the most frequent genetic aetiology of thyrotropin deficiency

Rachel Fourneaux, Rachel Reynaud, Gregory Mougel, Sarah Castets, Patricia Bretones, Benjamin Dauriat, Thomas Edouard, Gerald Raverot, Anne Barlier, Thierry Brue, Frederic Castinetti, and Alexandru Saveanu

Design

Thyroid-stimulating hormone deficiency (TSHD) is a rare disease. It may be isolated, secondary to abnormalities of genes involved in TSH biosynthesis, or associated with other pituitary deficits or abnormalities of genes involved in pituitary ontogenesis. Several genes are involved in thyrotroph development and function.

Objective

Our aim was to determine the genetic causes of TSHD, either isolated (ITSHD) or associated with somatotroph deficiency (TSHD-GHD), in the cohort of patients from the GENHYPOPIT network.

Methods

Next-generation sequencing (NGS) analyses were performed as a panel of genes on a cohort of patients with non-syndromic ITSHD or TSHGHD. The variants were classified according to the American College of Medical Genetics classification reviewed by the NGS-Diag network and correlated with the phenotype. Class 3, 4, and 5 single-nucleotide variants were checked by Sanger sequencing and copy number variants by multiplex ligation-dependent probe amplification (MLPA).

Results

A total of 64 index cases (22 ITSHD and 42 TSHD-GHD) were included in this cohort. A genetic cause was identified in 26.5% of patients, with 36.3% in the ITSHD group (variants in TSHβ and IGSF1) and 21.4% in TSHD-GHD (variants in IGSF1, TSHβ, TRHR, GH1, POU1F1, and PROP1). Among the pathogenic and likely pathogenic variants identified, 42% were in IGSF1, including six not previously reported.

Conclusion

Our results show that IGSF1 variants represent the most frequent aetiology of TSH deficiency. Despite a systematic NGS approach and the identification of new variants, most patients remain without a molecular diagnosis. Larger scale studies, such as exome or genome studies, should be considered in the future.