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 likely benign. Select a step to read what it means.
Likely benign.A likely benign classification under the recorded framework.
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.
No pathogenic criterion marked as applied in the recorded assessment.
BS3 is met at supporting level. Kleiblova et al. (PMID:31050813) performed a well-established cell-based functional assay quantifying CHK2-specific phosphorylation of endogenous KAP1 in human non-transformed RPE1-CHEK2-knock-out cells. The c.542G>A (p.Arg181His) variant was classified as NEUTRAL, retaining >50% of wild-type CHK2 kinase activity. This assay is considered well-validated — it reflects in vivo CHK2 behavior more accurately than in vitro kinase assays, resolves discrepancies seen in prior yeast-based and overexpression systems, and correctly stratified known pathogenic and benign controls. The neutral functional classification provides supporting evidence for a benign effect.
BP4 is met at supporting level. Multiple lines of in silico evidence suggest no impact on gene product: SpliceAI predicts no splicing alteration (max delta = 0.00); BayesDel score is -0.032 (benign range, below zero); REVEL score is 0.46, which is borderline and does not reach the typical pathogenic threshold (~0.7). The convergence of SpliceAI and BayesDel on a benign prediction, with REVEL being non-contributory, satisfies BP4 at the supporting level.
BP6 is met at supporting level. The ClinVar aggregate classification for Variation ID 5598 is Likely benign, reported by 10 clinical diagnostic laboratories (9 as Likely benign, 1 as Benign). An additional 8 submissions classify it as Uncertain significance and 1 as likely benign. The plurality of clinical laboratories with assertion criteria favor a benign interpretation. No expert panel review has been performed.
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: BS3 supporting, BP4 supporting, BP6 supporting; combination = 3 supporting benign, which maps to Likely Benign.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 85 / 1,613,934 alleles. Recorded AF 5.26663e-05. Recorded homozygote count 1.
This variant is present in gnomAD v2.1 (AF= 0.000127304; MAF= 0.01273%, 36/282788 alleles, homozygotes = 1) and has highest observed frequency in the East Asian population (AF= 0.00125326; MAF= 0.12533%, 25/19948 alleles, homozygotes = 1); grpmax FAF= 0.00089902.
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
9 Likely benign · 8 Uncertain significance · 1 likely benign · 1 Benign.
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.
26 criteria with recorded statuses: 3 met · 18 not met · 0 not assessed · 5 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_007194.4:c.542G>A (p.Arg181His) in CHEK2 is present in gnomAD at low frequency (v2.1 AF=0.0127%, v4.1 AF=0.0053%) with one homozygote observed in the East Asian population.
In a well-established cell-based functional assay (KAP1 phosphorylation in RPE1-CHEK2-KO cells), p.Arg181His was classified as NEUTRAL, retaining >50% of wild-type CHK2 kinase activity (Kleiblova et al. 2019).
Multiple lines of in silico evidence suggest no damaging impact: SpliceAI predicts no splicing alteration (max delta=0.00), BayesDel score is in the benign range (-0.032), and REVEL is borderline (0.46).
ClinVar aggregate classification is Likely benign from 10 clinical diagnostic laboratories, with an additional 8 labs reporting Uncertain significance (Variation ID 5598).
The variant has been reported in 1/400 sporadic prostate cancer cases (Dong et al. 2003), 1/516 familial breast cancer patients (Dufault et al. 2004), and 2/1928 breast/ovarian cancer patients (Kleiblova et al. 2019) without statistically significant enrichment versus controls.
No de novo observations, co-segregation data, or statistically significant case-control enrichment have been reported for this variant.
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 |
|---|
| East Asian39 / 44,852 | 0.000871 hom |
| South Asian12 / 91,072 | 0.00013 |
| African/African American7 / 75,008 | 9.3e-05 |
| Admixed American4 / 59,984 | 6.7e-05 |
| Remaining individuals3 / 62,504 | 4.8e-05 |
| European (non-Finnish)20 / 1,179,918 | 1.7e-05 |
| East Asian25 / 19,948 | 0.00131 hom |
| South Asian4 / 30,612 | 0.00013 |
| African/African American2 / 24,960 | 8e-05 |
| European (non-Finnish)4 / 129,118 | 3.1e-05 |
| Admixed American1 / 35,436 | 2.8e-05 |
This variant is present in gnomAD v4.1 (AF= 5.26663e-05; MAF= 0.00527%, 85/1613934 alleles, homozygotes = 1) and has highest observed frequency in the East Asian population (AF= 0.000869526; MAF= 0.08695%, 39/44852 alleles, homozygotes = 1); grpmax FAF= 0.00065305.
This variant is present in gnomAD v2.1 (AF= 0.000127304; MAF= 0.01273%, 36/282788 alleles, homozygotes = 1) and has highest observed frequency in the East Asian population (AF= 0.00125326; MAF= 0.12533%, 25/19948 alleles, homozygotes = 1); grpmax FAF= 0.00089902.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.46. BayesDel score = -0.0318827.
7 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= 5.26663e-05; MAF= 0.00527%, 85/1613934 alleles, homozygotes = 1) and has highest observed frequency in the East Asian population (AF= 0.000869526; MAF= 0.08695%, 39/44852 alleles, homozygotes = 1); grpmax FAF= 0.00065305.
This variant is present in gnomAD v2.1 (AF= 0.000127304; MAF= 0.01273%, 36/282788 alleles, homozygotes = 1) and has highest observed frequency in the East Asian population (AF= 0.00125326; MAF= 0.12533%, 25/19948 alleles, homozygotes = 1); grpmax FAF= 0.00089902.
This variant has been reported in ClinVar as Likely benign (9 clinical laboratories) and as Uncertain significance (8 clinical laboratories) and as likely benign (1 clinical laboratory) and as Benign (1 clinical laboratory). (ClinVarID = 5598)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.46. BayesDel score = -0.0318827.
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.