ArticleHuman mutation2020
POLD1 variants leading to reduced polymerase activity can cause hearing loss without syndromic features.
Article in Human mutation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 9 citations in OpenAlex.
- Genotype-phenotype heterogeneity among patients with lipodystrophy harboring rare POLD1 variants.The Journal of clinical endocrinology and metabolism · 2026Article
- POLD3 haploinsufficiency is linked to non-syndromic sensorineural adult-onset progressive hearing and balance impairments.European journal of human genetics : EJHG · 2025Article
- Prospects of POLD1 in Human Cancers: A Review.Cancers · 2023Review
- A likely pathogenic POLD1 variant associated with mandibular hypoplasia, deafness, progeroid features, and lipodystrophy syndrome in a Chinese patient.BMC medical genomics · 2022Article
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Authors and funding
16 authors at 7 institutions in 3 countries.
Funding
Abstract
DNA polymerase δ, whose catalytic subunit is encoded by POLD1, is responsible for synthesizing the lagging strand of DNA. Single heterozygous POLD1 mutations in domains with polymerase and exonuclease activities have been reported to cause syndromic deafness as a part of multisystem metabolic disorder or predisposition to cancer. However, the phenotypes of diverse combinations of POLD1 genotypes have not been elucidated in humans. We found that five members of a multiplex family segregating autosomal recessive nonsyndromic sensorineural hearing loss (NS-SNHL) have revealed novel compound heterozygous POLD1 variants (p.Gly1100Arg and a presumptive null function variant, p.Ser197Hisfs*54). The recombinant p.Gly1100Arg polymerase δ showed a reduced polymerase activity by 30-40%, but exhibited normal exonuclease activity. The polymerase activity in cell extracts from the affected subject carrying the two POLD1 mutant alleles was about 33% of normal controls. We suggest that significantly decreased polymerase δ activity, but not a complete absence, with normal exonuclease activity could lead to NS-SNHL.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.