About CHEK2
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 ClinGen CHEK2 VCEP v1.0.0. 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.
The variant is located in the CHEK2 kinase domain (residues 220-486), a well-established critical functional domain where numerous pathogenic missense variants cluster. p.Lys464Asn falls within the kinase domain activation segment, supporting a role in protein function disruption.
The variant is extremely rare in population databases. gnomAD v2.1 reports 1 allele in 233,756 (AF=4.28e-6, 0.00043%), and gnomAD v4.1 reports 0 alleles in 1,594,506. This is well below the PM2 threshold of <0.1% (0.001) for a rare variant absent or at extremely low frequency in controls.
Multiple lines of computational evidence suggest no impact on the gene product. REVEL score is 0.321 (below the pathogenic threshold of 0.5), BayesDel is -0.221 (benign-leaning), and SpliceAI max delta is 0.27 (below the splice-impact threshold of 0.5). HCI prior is not available for CHEK2. Together, these suggest the missense change is not predicted to be damaging.
Hereditary Breast, Ovarian and Pancreatic Cancer Specification v1.0.0 lacked a usable explicit final combination framework, so generic ACMG/AMP 2015 final-combination rules were applied as fallback; applied criteria: PM1 supporting, PM2 supporting, BP4 supporting benign; combination = 2 supporting + 1 supporting benign, which maps to VUS.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 0 / 1,594,506 alleles. Recorded AF 0. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 4.27797e-06; MAF= 0.00043%, 1/233756 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 9.19676e-06; MAF= 0.00092%, 1/108734 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.270. Refer to the recorded PP3/BP4 rationale for interpretation.
5 Uncertain significance.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. CHEK2, an intracellular kinase involved in control of the cell cycle, is altered in various cancer types.
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 ClinGen CHEK2 VCEP v1.0.0, with the data and sources behind each one.
29 criteria with recorded statuses: 3 met · 17 not met · 4 not assessed · 5 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_007194.4:c.1392G>T (p.Lys464Asn) is a missense variant in CHEK2 located in the kinase domain where pathogenic missense variants cluster.
This variant is extremely rare in population databases, with 1 allele in 233,756 in gnomAD v2.1 (AF=4.28e-6) and 0 alleles in 1,594,506 in gnomAD v4.1.
Multiple lines of computational evidence (REVEL=0.321, BayesDel=-0.221, SpliceAI max delta=0.27) suggest no significant impact on the gene product.
This variant has been reported in ClinVar as Uncertain significance by 5 clinical laboratories (VariationID 530112) with no pathogenic assertion from any reputable source.
PVS1 is not applicable as this is a missense change. No de novo, segregation, case-control, same-residue comparator, or confirmed functional evidence was available from verified sources to support pathogenicity.
Applying generic ACMG/AMP 2015 combination rules (PMID:25741868): PM1 (supporting) + PM2 (supporting) + BP4 (supporting benign) results in insufficient evidence to classify as pathogenic, likely pathogenic, or likely benign. The variant remains a Variant of Uncertain Significance (VUS).
No criteria match.
Every interpreted variant in CHEK2, mapped onto the exon structure of NM_007194.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| European (non-Finnish)1 / 108,734 | 9.2e-06 |
This variant is present in gnomAD v4.1 (AF= 0; MAF= 0.00000%, 0/1594506 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0; MAF= 0.00000%, 0/74920 alleles, homozygotes = 0).
This variant is present in gnomAD v2.1 (AF= 4.27797e-06; MAF= 0.00043%, 1/233756 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 9.19676e-06; MAF= 0.00092%, 1/108734 alleles, homozygotes = 0).
SpliceAI predicts possible splice impact for this variant (max delta score = 0.27). REVEL score = 0.321. BayesDel score = -0.220536.
9 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= 0; MAF= 0.00000%, 0/1594506 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0; MAF= 0.00000%, 0/74920 alleles, homozygotes = 0).
This variant is present in gnomAD v2.1 (AF= 4.27797e-06; MAF= 0.00043%, 1/233756 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 9.19676e-06; MAF= 0.00092%, 1/108734 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Uncertain significance (5 clinical laboratories). (ClinVarID = 530112)
SpliceAI predicts possible splice impact for this variant (max delta score = 0.27). REVEL score = 0.321. BayesDel score = -0.220536.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. CHEK2, an intracellular kinase involved in control of the cell cycle, is altered in various cancer types.
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.