Frequency of pathogenic/likely pathogenic germline variants in cancer‐related genes among children with acute leukemia in Saudi Arabia
| Autor: | Abdullah Al-Jefri, Shaker Abdullah, Mohammed F. Essa, Faisal Al-Anzi, Nawaf Alkhayat, Wasil Jastaniah, Mouhab Ayas, Qasim Alharbi, Abdulrahman Alsultan, Fawwaz Yassin, Musa Alharbi, Fawaz Alkasim |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Heterozygote Adolescent Childhood leukemia Saudi Arabia Consanguinity Germline 03 medical and health sciences 0302 clinical medicine Germline mutation Exome Sequencing Biomarkers Tumor medicine Humans Genetic Predisposition to Disease Child Germ-Line Mutation Acute leukemia business.industry High-Throughput Nucleotide Sequencing Infant Cancer Myeloid leukemia Hematology Prognosis medicine.disease Pediatric cancer Leukemia Myeloid Acute Oncology Child Preschool 030220 oncology & carcinogenesis Pediatrics Perinatology and Child Health Immunology Female business Follow-Up Studies 030215 immunology |
| Zdroj: | Pediatric Blood & Cancer. 67 |
| ISSN: | 1545-5017 1545-5009 |
| Popis: | Background The frequency of pathogenic/likely pathogenic (P/LP) germline mutations in cancer-related genes among children with cancer in highly consanguineous populations is not well studied. Methods Whole-exome sequencing of germline DNA was performed in 60 children with acute leukemia. We used the St. Jude Pediatric Cancer Variant Pathogenicity Information Exchange (PeCanPIE) data portal for the classification of germline variants by the St. Jude Medal Ceremony pipeline. Results Fifty-seven patients had acute lymphoblastic leukemia (ALL) and three patients had acute myeloid leukemia. Parental consanguinity was present in 27 (45%) patients. All patients were of Arab ancestry. Three patients (5%) had a history of cancer in their siblings. Five patients (8.3%) had P/LP germline mutations in cancer-related genes. Three patients with B-ALL had heterozygous pathogenic mutations in TP53, BRCA1, and BRCA2; one patient with B-ALL had homozygous pathogenic mutation in PMS2; and one patient with T-ALL had LP homozygous mutation in AK2 that was associated with reticular dysgenesis. Among patients who had history of parental consanguinity, three (11%) had P/LP germline mutations compared with two (8%) in the absence of parental consanguinity. Fourteen (23%) patients had gold medal variants in cancer-related genes, 13 were heterozygous, and one was homozygous. Silver medal variants were present in 35 (58%) patients; all were heterozygous except one homozygous. Conclusions Children with acute leukemia in Saudi Arabia had low frequency of P/LP mutations in cancer-related genes despite the high rate of consanguinity. Larger studies using whole-genome sequencing are needed to further explore the heritability of childhood leukemia. |
| Databáze: | OpenAIRE |
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