HMBS — 712 ClinVar variants

All ClinVar germline HMBS variants across every classification, each assembled from ClinVar, gnomAD, AlphaMissense, conservation and more. 226 flagged for review →

119 Pathogenic · 17 Pathogenic/Likely pathogenic · 32 Likely pathogenic · 23 Conflicting · 23 Benign · 9 Benign/Likely benign · 229 Likely benign · 260 Uncertain significance

Full HMBS gene report on Sugi Atlas → Gene function, pathways, protein structure, constraint & interactions

⚑ Evidence disagreements 226

Variants where the independent computational evidence doesn't line up with the clinical picture — a QC signal for a second look, not a reclassification.

Predictors vs ClinVar 2

ClinVar calls these pathogenic, but the computational predictors lean tolerated — the highest-value review flag.

Predicted LoF vs a conflicting call 3

ClinVar submitters conflict, and it's a predicted loss-of-function change in a gene where LoF causes disease — flagged for review, not resolved (verify NMD-escape for C-terminal truncations). Non-missense.

Predictors lean, ClinVar uncertain 139

ClinVar classifies these uncertain (VUS), but the independent predictors unanimously lean one way — a triage signal for review, not a reclassification.

Predictors split 68

The independent predictors disagree with each other — read with care.

All HMBS variants

Pathogenic 119

Pathogenic/Likely pathogenic 17

Likely pathogenic 32

Conflicting classifications of pathogenicity 23

Benign 23

Benign/Likely benign 9

  • c.210+5C>A Multiple submitters acute intermittent porphyria
  • p.Asn340= Multiple submitters acute intermittent porphyria
  • p.Asp359Asn Multiple submitters acute intermittent porphyria ⚠
  • p.His239= Multiple submitters acute intermittent porphyria
  • p.Ile110= Multiple submitters
  • p.Pro241= Multiple submitters acute intermittent porphyria
  • p.Ser45= Multiple submitters acute intermittent porphyria
  • p.Ser45Leu Multiple submitters acute intermittent porphyria
  • p.Val202= Multiple submitters acute intermittent porphyria

Likely benign 229

Uncertain significance 260