About MYH7
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 MYH7 VCEP v2.0. 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.
gnomAD grpmax FAF (v2.1: 0.00062247; v4.1: 0.00080614) exceeds the VCEP BS1 threshold of ≥0.0001 for MYH7. The variant is present at highest frequency in the African/African American population (v2.1: 22/24,960 alleles, 0.088%; v4.1: 74/74,932 alleles, 0.099%) with one homozygote in each dataset. Per VCEP specifications, BS1 may be used as standalone evidence to classify a variant as Likely Benign in the absence of conflicting data.
Expert panel ClinGen Cardiomyopathy Variant Curation Expert Panel classified as Likely benign.
ClinGen Cardiomyopathy Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for MYH7 Version 2.0 v2.0 criteria-combination framework: matched Rule18 (1 Benign.Strong + 1 Benign.Supporting) with applied criteria: BS1 strong benign, BP6 supporting benign; maps to Likely Benign.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 128 / 1,614,080 alleles. Recorded AF 7.93021e-05. Recorded homozygote count 1.
This variant is present in gnomAD v2.1 (AF= 8.83986e-05; MAF= 0.00884%, 25/282810 alleles, homozygotes = 1) and has highest observed frequency in the African/African American population (AF= 0.00088141; MAF= 0.08814%, 22/24960 alleles, homozygotes = 1); grpmax FAF= 0.00062247.
This variant is present in gnomAD-Canada v1.0 (AF= 0.00016291951775822744, 3/18414 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
7 Likely benign · 3 Uncertain significance · 1 Benign · 1 Uncertain Significance. ClinVar API review status: reviewed by expert panel.
No standalone functional evidence summary is recorded in evidence_summary.functional.
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 MYH7 VCEP v2.0, with the data and sources behind each one.
26 criteria with recorded statuses: 2 met · 15 not met · 0 not assessed · 9 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000257.4:c.4909G>A (p.Ala1637Thr) in MYH7 meets BS1 at strong_benign strength: gnomAD grpmax FAF (v2.1: 0.00062247; v4.1: 0.00080614) exceeds the VCEP threshold of ≥0.0001 for MYH7, with highest frequency in the African/African American population (v4.1: 0.099%) and one homozygote observed in each gnomAD dataset.
No pathogenic criteria are met. PM1 is not applicable (codon 1637 is outside the VCEP-defined cluster region of codons 167-931). PM2 is not met (gnomAD frequency far exceeds the ≤0.00004 threshold). PP3 is not met (REVEL 0.577 < 0.70 threshold). PS3/PS4/PM5/PM6/PP1/PS1/PS2 all lack supporting evidence.
Per VCEP BS1 specifications, 'Criterion BS1 may only be used as standalone evidence to classify a variant as Likely Benign in the absence of conflicting data.' No conflicting pathogenic evidence exists. All pathogenic criteria are either not met or not applicable. This variant is classified as Likely Benign.
This assessment is concordant with the ClinGen Cardiomyopathy Expert Panel classification of Likely Benign (ClinVar VariationID: 43044, review status: reviewed by expert panel), with 7 of 12 clinical laboratories also reporting Likely Benign or Benign.
One HCM case harboring this variant was reported by Nuñez et al. 2013 (PMID:23782526), in which all five in silico tools predicted A1637T as neutral. The variant was observed alongside established pathogenic mutations in the same cohort but was not functionally characterized.
No criteria match.
Every interpreted variant in MYH7, mapped onto the exon structure of NM_000257.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| African/African American74 / 74,932 | 0.000991 hom |
| Middle Eastern2 / 6,068 | 0.00033 |
| South Asian15 / 91,088 | 0.00016 |
| Remaining individuals5 / 62,482 | 8e-05 |
| Admixed American4 / 60,008 | 6.7e-05 |
| East Asian2 / 44,898 | 4.5e-05 |
| Ashkenazi Jewish1 / 29,606 | 3.4e-05 |
| European (non-Finnish)25 / 1,180,050 | 2.1e-05 |
| African/African American22 / 24,960 | 0.000881 hom |
| East Asian1 / 19,950 | 5e-05 |
| South Asian1 / 30,616 | 3.3e-05 |
| Admixed American1 / 35,440 | 2.8e-05 |
This variant is present in gnomAD v4.1 (AF= 7.93021e-05; MAF= 0.00793%, 128/1614080 alleles, homozygotes = 1) and has highest observed frequency in the African/African American population (AF= 0.000987562; MAF= 0.09876%, 74/74932 alleles, homozygotes = 1); grpmax FAF= 0.00080614.
This variant is present in gnomAD v2.1 (AF= 8.83986e-05; MAF= 0.00884%, 25/282810 alleles, homozygotes = 1) and has highest observed frequency in the African/African American population (AF= 0.00088141; MAF= 0.08814%, 22/24960 alleles, homozygotes = 1); grpmax FAF= 0.00062247.
This variant is present in gnomAD-Canada v1.0 (AF= 0.00016291951775822744, 3/18414 alleles, homozygotes = 0).
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.577. BayesDel score = -0.0637112.
10 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata.
Moreover, 2 of these were variants, R845K and A1637T, predicted to be neutral by all 5 methods.
Table 3 (Mutations Found in MYH7 Gene); Results, Novel Mutations in MYH7 paragraph; Discussion, lines 763-767
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= 7.93021e-05; MAF= 0.00793%, 128/1614080 alleles, homozygotes = 1) and has highest observed frequency in the African/African American population (AF= 0.000987562; MAF= 0.09876%, 74/74932 alleles, homozygotes = 1); grpmax FAF= 0.00080614.
This variant is present in gnomAD v2.1 (AF= 8.83986e-05; MAF= 0.00884%, 25/282810 alleles, homozygotes = 1) and has highest observed frequency in the African/African American population (AF= 0.00088141; MAF= 0.08814%, 22/24960 alleles, homozygotes = 1); grpmax FAF= 0.00062247.
This variant is present in gnomAD-Canada v1.0 (AF= 0.00016291951775822744, 3/18414 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Likely benign (7 clinical laboratories) and as Uncertain significance (3 clinical laboratories) and as Benign (1 clinical laboratory) and as Uncertain Significance (1 clinical laboratory) and as Likely Benign by ClinGen Cardiomyopathy Variant Curation Expert Panel (expert panel). (ClinVarID = 43044)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.577. BayesDel score = -0.0637112.
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.