| ORIGINAL ARTICLE
|Year : 2021 | Volume
| Issue : 2 | Page : 362--366
Clinical and Mutation Spectra of Cockayne Syndrome in India
Dhanya L Narayanan1, Moni Tuteja1, Adam D McIntyre2, Robert A Hegele2, Nadege Calmels3, Cathy Obringer4, Vincent Laugel4, Kausik Mandal1, Shubha R Phadke1
1 Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute, Lucknow, Uttar Pradesh, India
2 Department of Medicine and Robarts Research Institute, Western University, London, Ontario, Canada
3 Laboratory of Genetic Diagnosis, Strasbourg University Hospital, 1 place de l'Hospital, Strasbourg, France
4 Laboratory of Medical Genetics, Strasbourg University Hospital, 1 place de l'Hospital, Strasbourg, France
Background: Cockayne syndrome is an autosomal recessive disorder caused by biallelic mutations in ERCC6 or ERCC8 genes.
Aims: To study the clinical and mutation spectrum of Cockayne syndrome.
Setting and Design: Medical Genetics Outpatient Department of Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow. This was a prospective study from 2007 to 2015.
Materials and Methods: Clinical details were recorded, and sequencing of ERCC6 and ERCC8 were performed.
Results and Conclusions: Of the six families, one family had a homozygous mutation in ERCC8 and the other five families had homozygous mutations in ERCC6. Novel variants in ERCC6 were identified in four families. Phenotypic features may vary from severe to mild, and a strong clinical suspicion is needed for diagnosis during infancy or early childhood. Hence, molecular diagnosis is needed for confirmation of diagnosis in a child with a suspicion of Cockayne syndrome. Prenatal diagnosis can be provided only if molecular diagnosis is established in the proband.
Shubha R Phadke
Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute, Lucknow, Uttar Pradesh
Source of Support: None, Conflict of Interest: None
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