Genetics in medicine : official journal of the American College of Medical Genetics · 2015
Expanding the clinical, allelic, and locus heterogeneity of retinal dystrophies.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Patel Nisha, Aldahmesh Mohammed A, Alkuraya Hisham, Anazi Shamsa, Alsharif Hadeel, Khan Arif O, Sunker Asma, Al-Mohsen Saleh, Abboud Emad B, Nowilaty Sawsan R, Alowain Mohammed, Al-Zaidan Hamad, Al-Saud Bandar, Alasmari Ali, Abdel-Salam Ghada M H, Abouelhoda Mohamed, Abdulwahab Firdous M, Ibrahim Niema, Naim Ewa, Al-Younes Banan, E AlMostafa Abeer, AlIssa Abdulelah, Hashem Mais, Buzovetsky Olga, Xiong Yong, Monies Dorota, Altassan Nada, Shaheen Ranad, Al-Hazzaa Selwa A F, Alkuraya Fowzan S
Аннотация
PURPOSE: Retinal dystrophies (RD) are heterogeneous hereditary disorders of the retina that are usually progressive in nature. The aim of this study was to clinically and molecularly characterize a large cohort of RD patients.
METHODS: We have developed a next-generation sequencing assay that allows known RD genes to be sequenced simultaneously. We also performed mapping studies and exome sequencing on familial and on syndromic RD patients who tested negative on the panel.
RESULTS: Our panel identified the likely causal mutation in >60% of the 292 RD families tested. Mapping studies on all 162 familial RD patients who tested negative on the panel identified two novel disease loci on Chr2:25,550,180-28,794,007 and Chr16:59,225,000-72,511,000. Whole-exome sequencing revealed the likely candidate as AGBL5 and CDH16, respectively. We also performed exome sequencing on negative syndromic RD cases and identified a novel homozygous truncating mutation in GNS in a family with the novel combination of mucopolysaccharidosis and RD. Moreover, we identified a homozygous truncating mutation in DNAJC17 in a family with an apparently novel syndrome of retinitis pigmentosa and hypogammaglobulinemia.
CONCLUSION: Our study expands the clinical and allelic spectrum of known RD genes, and reveals AGBL5, CDH16, and DNAJC17 as novel disease candidates.Genet Med 18 6, 554-562.
METHODS: We have developed a next-generation sequencing assay that allows known RD genes to be sequenced simultaneously. We also performed mapping studies and exome sequencing on familial and on syndromic RD patients who tested negative on the panel.
RESULTS: Our panel identified the likely causal mutation in >60% of the 292 RD families tested. Mapping studies on all 162 familial RD patients who tested negative on the panel identified two novel disease loci on Chr2:25,550,180-28,794,007 and Chr16:59,225,000-72,511,000. Whole-exome sequencing revealed the likely candidate as AGBL5 and CDH16, respectively. We also performed exome sequencing on negative syndromic RD cases and identified a novel homozygous truncating mutation in GNS in a family with the novel combination of mucopolysaccharidosis and RD. Moreover, we identified a homozygous truncating mutation in DNAJC17 in a family with an apparently novel syndrome of retinitis pigmentosa and hypogammaglobulinemia.
CONCLUSION: Our study expands the clinical and allelic spectrum of known RD genes, and reveals AGBL5, CDH16, and DNAJC17 as novel disease candidates.Genet Med 18 6, 554-562.