Thyroid involvement in Chanarin-Dorfman syndrome in adults in the largest series of patients carrying the same founder mutation in ABHD5 gene

Orphanet Journal of Rare Diseases

Nacim Louhichi¹  Leila Keskes¹  Faiza Fakhfakh²  Lobna Trabelsi³  Kawthar Aloulou⁴  Hamida Turki⁵  Slaheddine Marrakchi⁵  Emna Bahloul⁵  Nadia Mahfouth⁶  Houda Ben Othman⁷  Chahnez Triki⁷  Zeineb Ayadi-Mnif⁸ 

[1] 0000 0001 2323 5644, grid.412124.0, Human Molecular Genetic Laboratory, Faculty of Medicine of Sfax, University of Sfax, Sfax, Tunisia;0000 0001 2323 5644, grid.412124.0, Molecular and Functional Genetics Laboratory, Department of Life Sciences, Faculty of Sciences of Sfax, University of Sfax, Sfax, Tunisia;Department of Endocrinology, Centre Intermédiare, Sfax, Tunisia;Department of Ophthalmology, Centre Intermédiare, Sfax, Tunisia;grid.413980.7, Department of Dermatology, Hedi Chaker Hospital, Sfax, Tunisia;grid.413980.7, Department of Immunology, Hedi Chaker Hospital, Sfax, Tunisia;grid.413980.7, Department of Neuropediatric, Hedi Chaker Hospital, Sfax, Tunisia;grid.413980.7, Department of Radiology, Hedi Chaker Hospital, Sfax, Tunisia;

关键词: Hypothyroidism;    CDS;    C.773(− 1)G > A mutation;    ABHD5;    Splice site;   

DOI  :  10.1186/s13023-019-1095-4

来源: publisher

【 摘 要 】

BackgroundChanarin-Dorfman syndrome (CDS) is a rare syndromic disease related to an accumulation of triacylglycerol in most organs. The aim of our study was to investigate various organs in a large series of CDS patients.ResultsWe report for the first time thyroid function impairment in CDS. Among 12 investigated patients, 7 showed thyroid function impairment. All of them were over 30 of age. The 5 remaining investigated patients with normal thyroid function were under 30. Thyroid loss of function is an unknown clinical feature of CDS that could gradually develop with age. Thyroid ultrasound showed an abnormal aspect in all investigated patients (6 with thyroid impairment and 3 with normal thyroid function). Cervical MRI done in 2 patients with thyroid impairment showed fat infiltration of thyroid parenchyma. Audiogram carried out in 8 of our patients showed sensorineural hearing impairment in all patients, although only 2 patients suffered from clinical hypoacusia. We also demonstrated that kidney could be a more commonly involved organ than previously reported in the literature. A poorly differentiated kidney parenchyma is a common feature in our series. One patient showed cerebellar atrophy and T2 hypersignal of brain’s white matter in MRI. All patients carried the same founder mutation c.773(− 1)G > A in the ABDH5 gene.DiscussionAside from the congenital ichthyosiform erythroderma, the most common symptom of CDS, in addition to other organs involvement frequently reported in the literature, we described thyroid dysfunction, an unreported feature, probably related to the lipid infiltration of the thyroid parenchyma. The association found between age and hypothyroidism in CDS patients could explain the gradually development of thyroid disease with age.ConclusionWe reported a thyroid dysfunction and unreported ultrasonographic aspects of kidneys and cerebral MRI in CDS patients.MethodsWe performed clinical analyses in 15 patients in whom thyroid, liver, ocular, kidney, skeletal muscle and neurological involvement were explored. Genetic and molecular explorations were performed by direct sequence analysis. Software SPSS, Fisher’s exact test and ANOVA were used for statistical analyses.

【 授权许可】

CC BY