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.
No pathogenic criterion marked as applied in the recorded assessment.
VCEP-endorsed functional assay data (Table S1, PMID:40580951) classifies M1830V as 'Functional' with 'High' confidence (Combined_score = -0.63; DeepATM_predicted = 'No'), indicating the variant rescues ATM function. Per VCEP BS3 rules, rescue of an ATM-specific feature qualifies for BS3_Supporting.
REVEL score = 0.146, which is ≤0.249 meeting the VCEP BP4 threshold for missense variants. SpliceAI max delta = 0.04 ≤ 0.1, indicating no predicted splicing impact. BayesDel = -0.31326. Multiple computational tools consistently predict a benign impact.
Richards et.al., 2015 - Combining rules v1.5.0 criteria-combination framework: matched Rule19 (Benign.Supporting >=2) with applied criteria: BS3 supporting, BP4 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: 27 / 1,611,638 alleles. Recorded AF 1.67531e-05. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 1.1962e-05; MAF= 0.00120%, 3/250794 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.000163506; MAF= 0.01635%, 1/6116 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.040. Refer to the recorded PP3/BP4 rationale for interpretation.
7 Uncertain significance · 4 Likely benign.
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 v1.5.0, with the data and sources behind each one.
29 criteria with recorded statuses: 2 met · 6 not met · 3 not assessed · 18 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000051.4:c.5488A>G (p.Met1830Val) is a missense variant in ATM, a gene in which loss of function is an established mechanism for ataxia telangiectasia (autosomal recessive) and where pathogenic variants confer moderate-risk susceptibility to hereditary breast, ovarian, and pancreatic cancer (autosomal dominant).
This variant is observed in gnomAD v4.1 at an overall allele frequency of 0.001675% (27/1,611,638 alleles; grpmax FAF = 0.0226%), which is rare but above the VCEP PM2 threshold of 0.001%, and does not meet BA1 (>0.5%), BS1 (>0.05%), or PM2_Supporting (≤0.001%) population thresholds.
VCEP-endorsed functional data (Table S1, PMID:40580951) classifies M1830V as 'Functional' with 'High' confidence (Combined_score = -0.63; DeepATM predicted not pathogenic), indicating the variant retains ATM function. This supports BS3_Supporting per VCEP rules.
Computational predictors consistently suggest a benign impact: REVEL = 0.146 (BP4 threshold ≤0.249), BayesDel = -0.31326, AlphaMissense = 0.0733, and SpliceAI max delta = 0.04. This supports BP4_Supporting per VCEP rules.
This variant has been reported in ClinVar as Uncertain significance by 7 clinical laboratories and Likely benign by 4 clinical laboratories (ClinVar Variation ID: 141271). It has been observed as a somatic variant (M1830V, VUS) in a metastatic pancreatic cancer case (PMID:27034805), but this somatic observation does not inform germline classification.
Applying the VCEP HBOP ATM v1.5.0 framework: met criteria include BS3_Supporting and BP4_Supporting (2 benign supporting criteria). No pathogenic criteria are met. Per ACMG/AMP combination rules (Rule 19), ≥2 benign supporting criteria support a classification of Likely Benign.
No criteria match.
No further detail was recorded.
No further detail was recorded.
No further detail was recorded.
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 |
|---|
| Middle Eastern4 / 6,056 | 0.00066 |
| East Asian7 / 44,790 | 0.00016 |
| African/African American3 / 74,856 | 4e-05 |
| Ashkenazi Jewish1 / 29,572 | 3.4e-05 |
| Admixed American1 / 59,988 | 1.7e-05 |
| Remaining individuals1 / 62,388 | 1.6e-05 |
| European (non-Finnish)10 / 1,178,052 | 8.5e-06 |
| Remaining individuals1 / 6,116 | 0.00016 |
| East Asian1 / 18,380 | 5.4e-05 |
| European (non-Finnish)1 / 113,264 | 8.8e-06 |
This variant is present in gnomAD v4.1 (AF= 1.67531e-05; MAF= 0.00168%, 27/1611638 alleles, homozygotes = 0) and has highest observed frequency in the Middle Eastern population (AF= 0.000660502; MAF= 0.06605%, 4/6056 alleles, homozygotes = 0); grpmax FAF= 0.00022553.
This variant is present in gnomAD v2.1 (AF= 1.1962e-05; MAF= 0.00120%, 3/250794 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.000163506; MAF= 0.01635%, 1/6116 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.04). REVEL score = 0.146. BayesDel score = -0.31326.
9 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata.
ATM NGS M1830V Variant of unknown significance
Table 1 (Caris molecular profiling of liver biopsy)
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= 1.67531e-05; MAF= 0.00168%, 27/1611638 alleles, homozygotes = 0) and has highest observed frequency in the Middle Eastern population (AF= 0.000660502; MAF= 0.06605%, 4/6056 alleles, homozygotes = 0); grpmax FAF= 0.00022553.
This variant is present in gnomAD v2.1 (AF= 1.1962e-05; MAF= 0.00120%, 3/250794 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.000163506; MAF= 0.01635%, 1/6116 alleles, homozygotes = 0).
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Uncertain significance (7 clinical laboratories) and as Likely benign (4 clinical laboratories). (ClinVarID = 141271)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.04). REVEL score = 0.146. BayesDel score = -0.31326.
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.