HIBCH — 291 ClinVar variants

All ClinVar germline HIBCH variants across every classification, each assembled from ClinVar, gnomAD, AlphaMissense, conservation and more. 93 flagged for review →

10 Pathogenic · 9 Pathogenic/Likely pathogenic · 27 Likely pathogenic · 13 Conflicting · 31 Benign · 9 Benign/Likely benign · 94 Likely benign · 98 Uncertain significance

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

⚑ Evidence disagreements 93

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 8

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

Predictors agree, ClinVar conflicts 7

ClinVar submitters conflict, but the independent predictors unanimously agree — a QC review flag, not a reclassification.

Predictors lean, ClinVar uncertain 63

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

All HIBCH variants

Pathogenic 10

  • p.Arg157Ter Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.517+1G>A Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Arg255Ter Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Gln334Ter Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Glu279Ter Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Gly199Ter Single submitter Inborn genetic diseases
  • p.Thr32fs Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.220-9T>G No assertion criteria 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.79-3C>G No assertion criteria 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Gly345Ser No assertion criteria 3-hydroxyisobutyryl-CoA hydrolase deficiency

Pathogenic/Likely pathogenic 9

  • c.1010_1011+3del Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.386-1G>C Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.809+1G>A Multiple submitters HIBCH-related disorders
  • c.891+1G>A Multiple submitters HIBCH-related disorders
  • p.Arg338Ter Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Cys163Phe Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Gly204fs Multiple submitters HIBCH-related disorder
  • p.Leu284fs Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Thr305Ala Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠

Likely pathogenic 27

  • p.Arg66Trp Multiple submitters HIBCH-related disorders ⚠
  • p.Gly317Glu Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.His153Tyr Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Lys377Ter Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1014_1015delAG Single submitter Inborn genetic diseases
  • c.304+1G>A Single submitter HIBCH-related disorders
  • c.385+2T>A Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.439-1G>A Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.664-2A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Arg186Ter Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Asn374del Single submitter
  • p.Asp254Ile Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Asp287Gly Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Cys163Tyr Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Gln285Ter Single submitter HIBCH-related disorders
  • p.Gln71Pro Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Gln71Ter Single submitter HIBCH-related disorders
  • p.Glu5_Arg12del Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Gly44fs Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.His153Arg Single submitter
  • p.His248Arg Single submitter Inborn genetic diseases ⚠
  • p.Ile84fs Single submitter
  • p.Leu124Pro Single submitter Inborn genetic diseases
  • p.Leu187Phe Single submitter HIBCH-related disorders
  • p.Phe165fs Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Phe259Leu Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Ser151Leu Single submitter Neurodegeneration due to 3-hydroxyisobutyryl coenzyme A hydrolase deficiency

Conflicting classifications of pathogenicity 13

  • c.1012-10T>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.439-2A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.664-7C>T Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.810-4A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Ala137Val Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Asp266Asn Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Glu76Lys Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Gly179Asp Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Gly345= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Lys42Arg Single submitter Inborn genetic diseases ⚠
  • p.Phe118Ser Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency ⚠
  • p.Tyr122Cys Single submitter Inborn genetic diseases ⚠
  • p.Val277Glu Single submitter Inborn genetic diseases ⚠

Benign 31

Benign/Likely benign 9

  • c.1011+11A>T Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1011+20del Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.35+8AG[2] Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.438+9A>T Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu72= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Met1Thr Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Ser319= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Thr81= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Val346= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency

Likely benign 94

  • c.305-71A>G Multiple submitters
  • c.36-13A>T Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.438+114A>G Multiple submitters
  • c.438+11T>G Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.438+19C>G Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.517+12G>T Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.518-12A>G Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.518-70C>T Multiple submitters
  • c.751-41A>G Multiple submitters
  • c.79-7T>C Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.892-18A>C Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.-11A>G Multiple submitters
  • c.*92C>G Multiple submitters
  • p.Gln295= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu184= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu307= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Ser104= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Thr321= Multiple submitters 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1011+10dup Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1011+20A>T Single submitter
  • c.1012-16C>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1012-19A>T Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1045+16G>A Single submitter
  • c.1046-124T>A Single submitter
  • c.1046-15A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.1046-8C>T Single submitter
  • c.219+16A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.220-10A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.220-15G>A Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.304+9T>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.305-5C>T Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.35+10A>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.35+89C>T Single submitter
  • c.36-16T>C Single submitter
  • c.386-60dup Single submitter
  • c.438+10C>T Single submitter
  • c.517+16T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.518-87A>G Single submitter
  • c.663+13A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.663+14T>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.664-13_664-7del Single submitter
  • c.664-18T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.664-8C>T Single submitter
  • c.750+9G>A Single submitter
  • c.751-19G>T Single submitter
  • c.78+15T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.78+17G>A Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.78+8A>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.79-16T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.79-4A>T Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.79-9T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.809+12G>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.809+19C>T Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.809+91T>C Single submitter
  • c.810-18C>G Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.891+16T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.891+18T>C Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.891+19C>T Single submitter
  • c.891+9G>A Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • c.892-7C>T Single submitter
  • c.-44C>T Single submitter
  • c.-46T>C Single submitter
  • c.-69G>T Single submitter
  • c.-73C>T Single submitter
  • c.*3T>C Single submitter
  • p.Arg4Cys Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Arg66= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Asn20= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Asp266= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Asp383= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Gln285Lys Single submitter Inborn genetic diseases
  • p.Gln313= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Glu294= Single submitter
  • p.Gly288= Single submitter
  • p.Gly317= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.His24= Single submitter
  • p.Ile299= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu261= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu284= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu350= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu364= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Leu51= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Lys110= Single submitter
  • p.Lys233= Single submitter
  • p.Phe216= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Thr21Ile Single submitter Inborn genetic diseases
  • p.Thr46= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Thr50= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Tyr135= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Val243= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Val277= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Val48= Single submitter 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Gly211Val No assertion criteria 3-hydroxyisobutyryl-CoA hydrolase deficiency
  • p.Thr143Lys No assertion criteria 3-hydroxyisobutyryl-CoA hydrolase deficiency

Uncertain significance 98