About HOXB13
No gene-level summary was recorded for this case.
No variant summary was recorded for this case.
Five-step scale from benign to pathogenic. This variant is uncertain. Select a step to read what it means.
Uncertain.The recorded classification is uncertain significance.
Gene-level background from the recorded interpretation.
Words with a dotted underline have a short definition. Hover or tap them.No gene-level summary was recorded for this case.
The recorded framework is Not recorded. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.
The applied criteria and their strengths are shown as assessed under the stated framework.
This variant is present at extremely low frequency in population databases. In gnomAD v2.1, the allele frequency is 0.00991% (28/282,626 alleles, 0 homozygotes; grpmax FAF=0.0715%). In gnomAD v4.1, the allele frequency is 0.00452% (73/1,614,196 alleles, 0 homozygotes; grpmax FAF=0.0589%). Both global AF and grpmax FAF are well below the 0.1% threshold for PM2. It is absent from gnomAD-Canada v1.0. The highest sub-population frequency is in the African/African American population (v2.1: 0.10%, v4.1: 0.075%).
Multiple reputable clinical diagnostic laboratories have independently classified NM_006361.6:c.567C>T as Benign or Likely benign in ClinVar (VariationID 483492). Specifically: 4 clinical laboratories classify as Likely benign (GeneDx, Ambry Genetics, KCCC/NGS Laboratory, Sinai Health System), 3 as Benign (Labcorp/Women's Health and Genetics, Myriad Genetics), and 1 as benign (Quest Diagnostics). These are established clinical testing laboratories with criteria-provided classifications. The underlying variant-specific evidence used by these laboratories is not publicly available for independent evaluation, satisfying the BP6 requirement.
gene-specific framework lacked a usable explicit final combination framework, so generic ACMG/AMP 2015 final-combination rules were applied as fallback; applied criteria: PM2 supporting, BP6 supporting; combination = 1 supporting + 1 supporting benign, which maps to VUS because the evidence is conflicting.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 73 / 1,614,196 alleles. Recorded AF 4.52238e-05. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 9.90709e-05; MAF= 0.00991%, 28/282626 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.00100152; MAF= 0.10015%, 25/24962 alleles, homozygotes = 0); grpmax FAF= 0.00071547.
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
4 Likely benign · 3 Benign · 1 benign.
OncoKB identified curated literature and non-variant-specific oncogenicity context for review; listed oncogenicity label: Unknown Oncogenic Effect.
This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under Not recorded, with the data and sources behind each one.
26 criteria with recorded statuses: 2 met · 17 not met · 1 not assessed · 6 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_006361.6:c.567C>T is a synonymous variant in HOXB13 (p.Asn189=) that does not alter the amino acid sequence.
This variant is extremely rare in population databases, present at an allele frequency of 0.00991% in gnomAD v2.1 (28/282,626 alleles) and 0.00452% in gnomAD v4.1 (73/1,614,196 alleles), with no homozygotes observed, satisfying PM2 at supporting level.
Multiple reputable clinical diagnostic laboratories (8 independent submissions) have classified this variant as Benign or Likely benign in ClinVar (VariationID 483492), with the underlying variant-specific evidence not publicly available for independent evaluation, satisfying BP6 at supporting level.
SpliceAI predicts no splicing impact (max delta score = 0.00), consistent with the synonymous nature of this variant.
No functional studies, cosegregation data, de novo observations, case-control studies, or computational evidence supporting pathogenicity have been identified for this variant.
The variant lies at codon 189, outside the HOXB13 homeodomain (aa 195-254), and does not fall within a known mutational hotspot or functionally critical domain.
Bulk evidence is sparse: one supporting pathogenic criterion (PM2) and one supporting benign criterion (BP6) are met, yielding a net indeterminate ACMG/AMP classification by strict criteria counting. However, the unanimous benign/likely benign consensus from 8 independent clinical laboratories strongly supports a benign interpretation.
No criteria match.
Every interpreted variant in HOXB13, mapped onto the exon structure of NM_006361.6. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| African/African American56 / 75,056 | 0.00075 |
| Middle Eastern1 / 6,062 | 0.00016 |
| Admixed American8 / 60,030 | 0.00013 |
| Remaining individuals7 / 62,510 | 0.00011 |
| European (Finnish)1 / 64,028 | 1.6e-05 |
| African/African American25 / 24,962 | 0.001 |
| Admixed American3 / 35,432 | 8.5e-05 |
This variant is present in gnomAD v4.1 (AF= 4.52238e-05; MAF= 0.00452%, 73/1614196 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.00074611; MAF= 0.07461%, 56/75056 alleles, homozygotes = 0); grpmax FAF= 0.00058932.
This variant is present in gnomAD v2.1 (AF= 9.90709e-05; MAF= 0.00991%, 28/282626 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.00100152; MAF= 0.10015%, 25/24962 alleles, homozygotes = 0); grpmax FAF= 0.00071547.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00).
4 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata. None of the listed paper records explicitly indicates that the variant is named.
Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.
The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.
This variant is present in gnomAD v4.1 (AF= 4.52238e-05; MAF= 0.00452%, 73/1614196 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.00074611; MAF= 0.07461%, 56/75056 alleles, homozygotes = 0); grpmax FAF= 0.00058932.
This variant is present in gnomAD v2.1 (AF= 9.90709e-05; MAF= 0.00991%, 28/282626 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.00100152; MAF= 0.10015%, 25/24962 alleles, homozygotes = 0); grpmax FAF= 0.00071547.
This variant has been reported in ClinVar as Likely benign (4 clinical laboratories) and as Benign (3 clinical laboratories) and as benign (1 clinical laboratory). (ClinVarID = 483492)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00).
OncoKB identified curated literature and non-variant-specific oncogenicity context for review; listed oncogenicity label: Unknown Oncogenic Effect.
This variant does not lie in a statistically significant hotspot. This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.