Utility of clinical exome sequencing in a complex Emirati pediatric cohort
Clinical exome sequencing (CES) has become a routine diagnostic tool in several pediatric subspecialties, with a reported average diagnostic yield of ~25% in this patient poulation. The utility of CES in the United Arab Emirates (UAE) has not been previously investigated, most likely due to the lack...
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doaj-78fcda79c66147dba9c457243a9eeeaf2021-01-02T05:08:34ZengElsevierComputational and Structural Biotechnology Journal2001-03702020-01-011810201027Utility of clinical exome sequencing in a complex Emirati pediatric cohortNour Abu Mahfouz0Praseetha Kizhakkedath1Alia Ibrahim2Maha El Naofal3Sathishkumar Ramaswamy4Divinlal Harilal5Yasmeen Qutub6Mohammed Uddin7Alan Taylor8Zeinab Alloub9Ammar AlBanna10Walid Abuhammour11Basil Fathalla12Ahmad Abou Tayoun13College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab EmiratesGenomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesRoyal College of Surgeons in Ireland, IrelandGenomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesGenomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesGenomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesGenomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesCollege of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab EmiratesGenomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesNeurodevelopment Department, IrelandCollege of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates; Mental Health Center, IrelandInfection Control Department, IrelandRheumatology Department, Al Jalila Children’s Specialty Hospital, Dubai, United Arab EmiratesCollege of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates; Genomics Center, Al Jalila Children’s Specialty Hospital, Dubai, United Arab Emirates; Correspondence author at: Genomics Center, Al Jalila Children's Specialty Hospital, Al Jaddaf, Dubai, United Arab Emirates.Clinical exome sequencing (CES) has become a routine diagnostic tool in several pediatric subspecialties, with a reported average diagnostic yield of ~25% in this patient poulation. The utility of CES in the United Arab Emirates (UAE) has not been previously investigated, most likely due to the lack of the appropriate tertiary pediatric centers and diagnostic genomic facilities in this country. Here, we report, for the first time, CES findings on a multispecialty pediatric cohort in the UAE (N = 51). This cohort, which was mostly Emirati (86%; 44/51), was followed at Al Jalila Children’s Hospital (AJCH), the first and only dedicated tertiary pediatric center in the country. CES demonstrates a high diagnostic yield (41%; 21/51) in this cohort, where 55% (28/51) had previous non-diagnostic genetic testing while for the remaining individuals (45%), CES was the first-tier test. Given the reported high consanguinity rate in this population, 48% of the positive cases (10/21) were due to genes associated with recessive conditions. However, 11 out of 21 positive cases (52%) were due to heterozygous pathogenic variants in genes known to cause dominantly inherited disorders, including a case with a dual diagnosis attributed to two different genes (2%; 1/51), and another case with a novel de novo variant and new phenotypic features for a known gene (2%; 1/51). Overall, we have identified 13 novel clinically significant variants and showed that application of CES as a first-tier test plays a significant role in genetic diagnosis and management of Emirati pediatric patients.http://www.sciencedirect.com/science/article/pii/S2001037020301616Clinical exome sequencingWESPediatricDiagnostic yield |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nour Abu Mahfouz Praseetha Kizhakkedath Alia Ibrahim Maha El Naofal Sathishkumar Ramaswamy Divinlal Harilal Yasmeen Qutub Mohammed Uddin Alan Taylor Zeinab Alloub Ammar AlBanna Walid Abuhammour Basil Fathalla Ahmad Abou Tayoun |
spellingShingle |
Nour Abu Mahfouz Praseetha Kizhakkedath Alia Ibrahim Maha El Naofal Sathishkumar Ramaswamy Divinlal Harilal Yasmeen Qutub Mohammed Uddin Alan Taylor Zeinab Alloub Ammar AlBanna Walid Abuhammour Basil Fathalla Ahmad Abou Tayoun Utility of clinical exome sequencing in a complex Emirati pediatric cohort Computational and Structural Biotechnology Journal Clinical exome sequencing WES Pediatric Diagnostic yield |
author_facet |
Nour Abu Mahfouz Praseetha Kizhakkedath Alia Ibrahim Maha El Naofal Sathishkumar Ramaswamy Divinlal Harilal Yasmeen Qutub Mohammed Uddin Alan Taylor Zeinab Alloub Ammar AlBanna Walid Abuhammour Basil Fathalla Ahmad Abou Tayoun |
author_sort |
Nour Abu Mahfouz |
title |
Utility of clinical exome sequencing in a complex Emirati pediatric cohort |
title_short |
Utility of clinical exome sequencing in a complex Emirati pediatric cohort |
title_full |
Utility of clinical exome sequencing in a complex Emirati pediatric cohort |
title_fullStr |
Utility of clinical exome sequencing in a complex Emirati pediatric cohort |
title_full_unstemmed |
Utility of clinical exome sequencing in a complex Emirati pediatric cohort |
title_sort |
utility of clinical exome sequencing in a complex emirati pediatric cohort |
publisher |
Elsevier |
series |
Computational and Structural Biotechnology Journal |
issn |
2001-0370 |
publishDate |
2020-01-01 |
description |
Clinical exome sequencing (CES) has become a routine diagnostic tool in several pediatric subspecialties, with a reported average diagnostic yield of ~25% in this patient poulation. The utility of CES in the United Arab Emirates (UAE) has not been previously investigated, most likely due to the lack of the appropriate tertiary pediatric centers and diagnostic genomic facilities in this country. Here, we report, for the first time, CES findings on a multispecialty pediatric cohort in the UAE (N = 51). This cohort, which was mostly Emirati (86%; 44/51), was followed at Al Jalila Children’s Hospital (AJCH), the first and only dedicated tertiary pediatric center in the country. CES demonstrates a high diagnostic yield (41%; 21/51) in this cohort, where 55% (28/51) had previous non-diagnostic genetic testing while for the remaining individuals (45%), CES was the first-tier test. Given the reported high consanguinity rate in this population, 48% of the positive cases (10/21) were due to genes associated with recessive conditions. However, 11 out of 21 positive cases (52%) were due to heterozygous pathogenic variants in genes known to cause dominantly inherited disorders, including a case with a dual diagnosis attributed to two different genes (2%; 1/51), and another case with a novel de novo variant and new phenotypic features for a known gene (2%; 1/51). Overall, we have identified 13 novel clinically significant variants and showed that application of CES as a first-tier test plays a significant role in genetic diagnosis and management of Emirati pediatric patients. |
topic |
Clinical exome sequencing WES Pediatric Diagnostic yield |
url |
http://www.sciencedirect.com/science/article/pii/S2001037020301616 |
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