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rs4148323

UGT1A1*6

UGT1Amissense variantp.Gly71Argsingle nucleotide variant
ClinVar by condition
  • UGT1A1-related disorderPathogenic · ★ · germline
  • Lucey-Driscoll syndrome (HBLRTFN)Pathogenic · ★ · germline
  • Crigler-Najjar syndrome type 1Pathogenic · ★ · germline
  • Crigler-Najjar syndrome, type IIPathogenic · ★ · germline
  • Gilbert syndromePathogenic · ★ · germline
  • Crigler-Najjar syndrome, type IILikely pathogenic · ★ · unknown
  • Irinotecan responseDrug response · ★ · germline
  • Gilbert syndromeConflicting interpretations · ★ · germline
  • Bilirubin, serum level of, quantitative trait locus 1 (BILIQTL1)Uncertain significance · ★ · germline
  • Crigler-Najjar syndrome type 1Uncertain significance · ★ · germline
  • Lucey-Driscoll syndrome (HBLRTFN)Uncertain significance · ★ · germline
  • Crigler-Najjar syndrome, type IIUncertain significance · ★ · germline

gnomAD allele frequency 1.44e-2

rs4148323 is a genetic variant located in the UGT1A gene. dbsnp · gene

In gnomAD, rs4148323 has an overall allele frequency of 1.4%. gnomad · frequency

In ClinVar, rs4148323 is classified as Pathogenic for UGT1A1-related disorder (1 review star, germline; last evaluated 2024-12-19). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Pathogenic for Lucey-Driscoll syndrome (HBLRTFN) (1 review star, germline; last evaluated 2024-12-10). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Pathogenic for Crigler-Najjar syndrome type 1 (1 review star, germline; last evaluated 2024-12-10). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Pathogenic for Crigler-Najjar syndrome, type II (1 review star, germline; last evaluated 2024-12-10). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Pathogenic for Gilbert syndrome (1 review star, germline; last evaluated 2024-12-10). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Likely pathogenic for Crigler-Najjar syndrome, type II (1 review star; last evaluated 2019-05-28). clinvar · classificationclinvar · review confidenceclinvar · assertion date

In ClinVar, rs4148323 is classified as Drug response for Irinotecan response (1 review star, germline; last evaluated 2018-04-04). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Conflicting interpretations for Gilbert syndrome (1 review star, germline; last evaluated 2017-04-27). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Uncertain significance for Bilirubin, serum level of, quantitative trait locus 1 (BILIQTL1) (1 review star, germline). clinvar · classificationclinvar · review confidenceclinvar · origin

In ClinVar, rs4148323 is classified as Uncertain significance for Crigler-Najjar syndrome type 1 (1 review star, germline). clinvar · classificationclinvar · review confidenceclinvar · origin

In ClinVar, rs4148323 is classified as Uncertain significance for Lucey-Driscoll syndrome (HBLRTFN) (1 review star, germline). clinvar · classificationclinvar · review confidenceclinvar · origin

In ClinVar, rs4148323 is classified as Uncertain significance for Crigler-Najjar syndrome, type II (1 review star, germline). clinvar · classificationclinvar · review confidenceclinvar · origin

In ClinVar, rs4148323 is classified as Uncertain significance for Gilbert syndrome (1 review star, germline). clinvar · classificationclinvar · review confidenceclinvar · origin

In ClinVar, rs4148323 is classified as association for Bilirubin, serum level of, quantitative trait locus 1 (BILIQTL1) (0 review stars, germline; last evaluated 2013-01-01). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Conflicting interpretations for not specified (1 review star, germline; last evaluated 2025-03-04). clinvar · classificationclinvar · review confidenceclinvar · originclinvar · assertion date

In ClinVar, rs4148323 is classified as Conflicting interpretations for not provided (1 review star; last evaluated 2025-01-24). clinvar · classificationclinvar · review confidenceclinvar · assertion date

Sources

retrieved 2026-08-03 · facts 1be91acdef9b6644 · meta/llama-3.1-8b-instruct · prompt 4.0.1 · schema 3.0.0

Educational information only — not medical advice, a diagnosis, or a clinical interpretation. A variant's significance can be uncertain, conflicting, or dependent on your full clinical and family context. Consult a qualified genetics professional or genetic counselor before drawing any conclusion.