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. Select a step to read what it means.
Not classified yet.Select a step to read what it means.
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. 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 in gnomAD v4.1 at an extremely low frequency (AF=1.86e-06; 3/1,613,480 alleles, 0 homozygotes; grpmax FAF=6.8e-07). Per ATM VCEP v1.5, frequency ≤0.001% in gnomAD v4 qualifies for PM2_Supporting.
SpliceAI predicts a possible splicing impact (max delta score = 0.24). Per ATM VCEP v1.5, SpliceAI ≥0.2 qualifies for PP3_Supporting for missense variants via the splicing prediction route. The REVEL score (0.054) does NOT independently support PP3 via the missense pathway (threshold >0.7333).
Functional assay data curated by the ATM HBOP VCEP (Suppl_TableS1, based on kinase activity assays: Mitui 2009 PMID 18634022, Barone 2009 PMID 19431188; and radiosensitivity assays: Mitui 2009, Scott 2002 PMID 11805335) classify NM_000051.4:c.4997A>C (p.E1666A) as 'Functional' with High confidence (combined score 0.456). The variant rescues both ATM-specific kinase activity (phosphorylation of ATM targets) and cellular radiosensitivity, satisfying the VCEP BS3_Moderate threshold: variant rescues both an ATM-specific feature AND radiosensitivity.
The REVEL score for this variant is 0.054, which is ≤0.249, meeting the ATM VCEP BP4_Supporting threshold for missense variants. Multiple in silico predictors support a benign effect: REVEL 0.054, BayesDel -0.367, EVE 0.058, AlphaMissense 0.1033. The SpliceAI delta (0.24) does NOT support BP4 via the splicing route (threshold ≤0.1).
ClinGen Hereditary Breast, Ovarian and Pancreatic Cancer Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for ATM Version 1.5 v1.5 criteria-combination framework: matched Rule31 (Benign.Supporting >=1 + Pathogenic.Supporting >=1) with applied criteria: PM2 supporting, PP3 supporting, BS3 moderate, BP4 supporting; maps to Uncertain Significance - Conflicting Evidence.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 3 / 1,613,480 alleles. Recorded AF 1.85934e-06. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 3.18512e-05; MAF= 0.00319%, 1/31396 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48172e-05; MAF= 0.00648%, 1/15428 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.240. Refer to the recorded PP3/BP4 rationale for interpretation.
4 Uncertain significance · 1 Likely benign. ClinVar API review status: criteria provided, conflicting classifications.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. ATM, a kinase involved in the DNA damage response, is mutated in various solid and hematologic malignancies.
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 ATM VCEP v1.5, with the data and sources behind each one.
26 criteria with recorded statuses: 4 met · 7 not met · 0 not assessed · 15 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000051.4:c.4997A>C (p.Glu1666Ala) is a missense variant at an extremely low population frequency (gnomAD v4.1 AF = 1.86e-06, 3/1,613,480 alleles).
Functional assay data curated by the ClinGen HBOP VCEP demonstrate that p.Glu1666Ala rescues both ATM kinase activity and cellular radiosensitivity to wild-type levels, consistent with a benign functional effect (BS3_Moderate).
Multiple in silico predictors support a benign effect: REVEL 0.054 (≤0.249, BP4_Supporting), BayesDel -0.367, EVE 0.058, AlphaMissense 0.1033.
SpliceAI predicts a possible splicing impact (max delta 0.24, ≥0.2) qualifying for PP3_Supporting under the VCEP splicing prediction rule, though this is modestly above threshold and conflicts with the benign in silico and functional evidence.
The variant is absent from COSMIC and no case-control or segregation studies are available. Six publications provided by ClinVar were reviewed in full text; none mention NM_000051.4:c.4997A>C specifically.
No criteria match.
Every interpreted variant in ATM, mapped onto the exon structure of NM_000051.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| European (non-Finnish)3 / 1,179,586 | 2.5e-06 |
| European (non-Finnish)1 / 15,428 | 6.5e-05 |
This variant is present in gnomAD v4.1 (AF= 1.85934e-06; MAF= 0.00019%, 3/1613480 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 2.54327e-06; MAF= 0.00025%, 3/1179586 alleles, homozygotes = 0); grpmax FAF= 6.8e-07.
This variant is present in gnomAD v2.1 (AF= 3.18512e-05; MAF= 0.00319%, 1/31396 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48172e-05; MAF= 0.00648%, 1/15428 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
SpliceAI predicts possible splice impact for this variant (max delta score = 0.24). REVEL score = 0.054. BayesDel score = -0.367169.
6 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= 1.85934e-06; MAF= 0.00019%, 3/1613480 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 2.54327e-06; MAF= 0.00025%, 3/1179586 alleles, homozygotes = 0); grpmax FAF= 6.8e-07.
This variant is present in gnomAD v2.1 (AF= 3.18512e-05; MAF= 0.00319%, 1/31396 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 6.48172e-05; MAF= 0.00648%, 1/15428 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Uncertain significance (4 clinical laboratories) and as Likely benign (1 clinical laboratory). (ClinVarID = 1043495)
SpliceAI predicts possible splice impact for this variant (max delta score = 0.24). REVEL score = 0.054. BayesDel score = -0.367169.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. ATM, a kinase involved in the DNA damage response, is mutated in various solid and hematologic malignancies.
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.