About ATM
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 ATM VCEP v1.5.0. 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.
PM2_Supporting is met under ATM VCEP v1.5.0. The variant frequency in gnomAD v4.1 is 0.00019% (3/1,613,812 alleles; grpmax FAF = 6.8e-07), which is ≤ 0.001%, meeting the VCEP PM2_Supporting threshold. The variant is absent from gnomAD v2.1, consistent with extreme rarity.
BP4_Supporting is met under ATM VCEP v1.5.0 (splicing path). The variant has no predicted impact on splicing: SpliceAI max delta score = 0.01, which is ≤ 0.1, meeting the VCEP BP4 threshold for benign computational splicing prediction. No REVEL score is available as this is a synonymous variant (the missense path is not applicable).
Expert panel ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer Variant Curation Expert Panel, ClinGen classified as Likely benign.
BP7_Supporting is met under ATM VCEP v1.5.0. This is a synonymous variant (c.8751C>T, p.Gly2917=) located at nucleotide position c.8751 within exon 62 (c.8654 to c.8803). The variant lies 52 nucleotides upstream of the donor site and 97 nucleotides downstream of the acceptor site, well beyond the VCEP-defined boundaries of +7 (donor) and -21 (acceptor). SpliceAI predicts no splice impact (max delta = 0.01). No aberrant RNA defect has been observed or predicted for this variant.
Richards et.al., 2015 - Combining rules v1.5.0 criteria-combination framework: matched Rule19 (Benign.Supporting >=2) with applied criteria: PM2 supporting, BP4 supporting, BP6 supporting benign, BP7 supporting; maps to Likely Benign.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 3 / 1,613,812 alleles. Recorded AF 1.85895e-06. Recorded homozygote count 0.
Absent from gnomAD v2.1.
Recorded SpliceAI maximum delta score: 0.010. Refer to the recorded PP3/BP4 rationale for interpretation.
2 Likely benign · 1 Benign · 1 Uncertain significance.
OncoKB identified curated literature and non-variant-specific oncogenicity context for review; listed oncogenicity label: Unknown Oncogenic Effect.
This variant has previously been reported in somatic cancers (COSMIC; COSV113466872, n = 1 times).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen ATM VCEP v1.5.0, with the data and sources behind each one.
26 criteria with recorded statuses: 4 met · 4 not met · 5 not assessed · 13 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
This synonymous variant (NM_000051.3:c.8751C>T, p.Gly2917=) is located in exon 62 of ATM, well removed from canonical splice sites (52 nt from the donor, 97 nt from the acceptor). SpliceAI predicts no splice impact (max delta = 0.01), consistent with BP4_Supporting under the ATM HBOP VCEP v1.5.0.
As a synonymous variant not near splice consensus boundaries and with no predicted or observed splice defect, BP7_Supporting is met under ATM VCEP v1.5.0.
The variant is extremely rare in population databases: absent from gnomAD v2.1 and present at AF = 0.00019% (3/1,613,812 alleles, grpmax FAF = 6.8e-07) in gnomAD v4.1, meeting PM2_Supporting under ATM VCEP v1.5.0 (threshold ≤ 0.001%).
This variant has been classified as Likely Benign by the ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer VCEP (ClinVar Variation ID 453745, reviewed by expert panel). Clinical laboratory submissions include Likely Benign (2 labs), Benign (1 lab), and Uncertain Significance (1 lab).
PVS1, PS1, and PM5 are not applicable as the variant is synonymous and does not cause a null effect, amino acid change, or premature termination codon. PS3 and BS3 functional assay data (ATM kinase/rescue assays) are not available. PS4 case-control data and PP1 segregation data are absent. BA1 and BS1 population frequency thresholds are not met. PP3 computational evidence for pathogenicity is not met.
Under the ATM VCEP v1.5.0 combination rules (adapted from Richards et al. 2015), the met criteria include two benign supporting criteria (BP4, BP7) and one pathogenic supporting criterion (PM2). Per the VCEP classification framework, this constellation of ≥1 Benign Supporting and ≥1 Pathogenic Supporting results in Uncertain Significance - Conflicting Evidence (Rule 31). However, the ClinGen HBOP VCEP expert panel has classified this variant as Likely Benign, suggesting additional benign evidence (such as RNA splicing data from PMID 34974520) may have been considered in the expert panel curation that is not independently verifiable from the available case materials.
No criteria match.
Every interpreted variant in ATM, mapped onto the exon structure of NM_000051.3. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| European (non-Finnish)3 / 1,179,944 | 2.5e-06 |
This variant is present in gnomAD v4.1 (AF= 1.85895e-06; MAF= 0.00019%, 3/1613812 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 2.54249e-06; MAF= 0.00025%, 3/1179944 alleles, homozygotes = 0); grpmax FAF= 6.8e-07.
Absent from gnomAD v2.1.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.01).
10 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= 1.85895e-06; MAF= 0.00019%, 3/1613812 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 2.54249e-06; MAF= 0.00025%, 3/1179944 alleles, homozygotes = 0); grpmax FAF= 6.8e-07.
Absent from gnomAD v2.1.
This variant has been reported in ClinVar as Likely benign (2 clinical laboratories) and as Benign (1 clinical laboratory) and as Uncertain significance (1 clinical laboratory) and as Likely Benign by ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer Variant Curation Expert Panel, ClinGen (expert panel). (ClinVarID = 453745)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.01).
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 previously been reported in somatic cancers (COSMIC; COSV113466872, n = 1 times).
This variant does not lie in a statistically significant hotspot.