We have located links that may give you full text access.
Comprehensive genomic analysis identifies a diverse landscape of sideroblastic and non-sideroblastic iron related anemias with novel and pathogenic variants in an iron deficient endemic setting.
Journal of Molecular Diagnostics : JMD 2024 Februrary 14
Inherited iron metabolism defects are possibly missed or underdiagnosed in iron-deficient endemic settings due to a lack of awareness or a methodical screening approach. Hence, we planned a systematic evaluation of anemia cases (2019-2021) based on clinical phenotype, normal screening tests (HPLC, alpha gene sequencing, ESR, CRP, tTG), and abnormal iron profile by targeted NGS (26 gene-panel) supplemented with whole exome, MLPA/mtDNA sequencing and CMA. Novel variants in ALAS2, STEAP3, and HSPA9 genes were functionally validated. 290 anemia cases were screened and 41 (14%) enrolled for genomic testing as per inclusion criteria. Comprehensive genomic testing revealed pathogenic variants in 23/41 (56%) cases. Congenital sideroblastic anemia (CSA) was the most common diagnosis (14/23;61%) with pathogenic variations in ALAS2 (6), SLC25A38 (3), HSPA9 (2) and HSCB, SLC19A2 and mtDNA deletion (1 each). Non-sideroblastic iron defects included STEAP3-related microcytic anemia (2/23;8.7%) and hypotransferrenemia (1/23;4.3%). 6/22 (27%) revealed a non-iron metabolism gene defect on whole exome sequencing. A total of 11 novel variants (including VUS) were noted in 13 cases. Genotype-phenotype correlation revealed a significant association of frameshift/nonsense/splice variants with lower presentation age (0.8 months vs. 9 years; p-<0.01) compared to missense variants. The systematic evaluation helped uncover an inherited iron defect in 41% (17/41) cases, suggesting the need for active screening and awareness for these rare diseases in an iron deficient endemic population.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app