About NF1
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 benign. Select a step to read what it means.
Benign.A 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 NF1 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.
The allele frequency in the South Asian subpopulation is 3.24% (gnomAD v2.1) and 3.27% (gnomAD v4.1) with 27 and 85 homozygotes respectively. The gnomAD grpmax filtering allele frequency is 3.07% (v2.1) and 3.17% (v4.1). These frequencies far exceed the 1% threshold for BA1, establishing this variant as a common population polymorphism incompatible with NF1 pathogenicity.
The overall allele frequency is 0.496% (gnomAD v2.1, 1400/282340 alleles) and 0.366% (gnomAD v4.1, 5902/1613864 alleles). This exceeds the 0.3% threshold for BS1, indicating the variant is more common than expected for a pathogenic NF1 variant.
The variant has been observed in the homozygous state in 29 individuals in gnomAD v2.1 and 90 individuals in gnomAD v4.1. Homozygosity for a variant in NF1, a gene associated with a highly penetrant autosomal dominant disorder, is incompatible with a pathogenic role.
Multiple lines of computational evidence suggest no impact on the gene product. SpliceAI predicts no significant splicing impact (max delta 0.06). The variant is synonymous (p.Q282=) with no amino acid change and no predicted effect on splicing. No in silico tools predict a deleterious effect.
A reputable source classifies this variant as benign. ClinVar reports 14 clinical laboratories classifying this variant as Benign and 9 as Likely benign (ClinVar variation ID 184123). The consensus across multiple independent clinical laboratories supports a benign interpretation.
This is a synonymous variant (p.Q282=) at a nucleotide position with no predicted impact on splicing (SpliceAI max delta 0.06). The variant does not alter the primary amino acid sequence and has no predicted effect on mRNA splicing, consistent with BP7 criteria for a benign synonymous variant.
Neurofibromatosis and Schwannomatosis 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: BA1 stand-alone benign, BS1 strong benign, BS2 strong benign, BP4 supporting benign, BP6 supporting benign, BP7 supporting benign; combination = 1 stand-alone benign + 2 strong benign + 3 supporting benign, which maps to Benign.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 5,902 / 1,613,864 alleles. Recorded AF 0.00365706. Recorded homozygote count 90.
This variant is present in gnomAD v2.1 (AF= 0.00495856; MAF= 0.49586%, 1400/282340 alleles, homozygotes = 29) and has highest observed frequency in the South Asian population (AF= 0.0324229; MAF= 3.24229%, 990/30534 alleles, homozygotes = 27); grpmax FAF= 0.0307466.
This variant is present in gnomAD-Canada v1.0 (AF= 0.006462474204409688, 119/18414 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.060. Refer to the recorded PP3/BP4 rationale for interpretation.
14 Benign · 9 Likely benign.
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; COSV62201020, n = 4 times).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen NF1 VCEP v1.0.0, with the data and sources behind each one.
26 criteria with recorded statuses: 6 met · 5 not met · 5 not assessed · 10 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
BA1 is met: allele frequency of 3.24% in the South Asian subpopulation (gnomAD v2.1) with 27 homozygotes and grpmax FAF of 3.07% far exceeds the 1% stand-alone benign threshold, establishing NM_000267.3:c.846G>A as a common population polymorphism incompatible with NF1 pathogenicity.
BS1 is met: overall gnomAD allele frequency of 0.496% (v2.1, 1400/282340 alleles) exceeds the 0.3% strong benign threshold.
BS2 is met: the variant is observed in 29 homozygous individuals in gnomAD v2.1 and 90 homozygous individuals in gnomAD v4.1, which is incompatible with a highly penetrant autosomal dominant disorder like NF1.
This variant has been reported in ClinVar as Benign by 14 clinical laboratories and as Likely benign by 9 clinical laboratories, supporting BP6.
SpliceAI predicts no significant splicing impact (max delta 0.06) and the variant is synonymous (p.Q282=) with no amino acid change, supporting BP4 and BP7.
No criteria match.
Every interpreted variant in NF1, mapped onto the exon structure of NM_000267.3. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| South Asian2972 / 91,024 | 0.03385 hom |
| Middle Eastern94 / 6,060 | 0.016 |
| Ashkenazi Jewish261 / 29,596 | 0.0088 |
| Remaining individuals284 / 62,498 | 0.00451 hom |
| European (non-Finnish)2185 / 1,179,894 | 0.00194 hom |
| Admixed American59 / 59,998 | 0.00098 |
| African/African American27 / 75,030 | 0.00036 |
| European (Finnish)17 / 63,992 | 0.00027 |
| East Asian3 / 44,860 | 6.7e-05 |
| South Asian990 / 30,534 | 0.03227 hom |
| Ashkenazi Jewish91 / 10,362 | 0.0088 |
| Remaining individuals29 / 7,208 | 0.0041 hom |
| European (non-Finnish)243 / 128,874 | 0.00191 hom |
| Admixed American27 / 35,382 | 0.00076 |
| African/African American11 / 24,948 | 0.00044 |
| European (Finnish)7 / 25,092 | 0.00028 |
| East Asian2 / 19,940 | 0.0001 |
This variant is present in gnomAD v4.1 (AF= 0.00365706; MAF= 0.36571%, 5902/1613864 alleles, homozygotes = 90) and has highest observed frequency in the South Asian population (AF= 0.0326507; MAF= 3.26507%, 2972/91024 alleles, homozygotes = 85); grpmax FAF= 0.0316716.
This variant is present in gnomAD v2.1 (AF= 0.00495856; MAF= 0.49586%, 1400/282340 alleles, homozygotes = 29) and has highest observed frequency in the South Asian population (AF= 0.0324229; MAF= 3.24229%, 990/30534 alleles, homozygotes = 27); grpmax FAF= 0.0307466.
This variant is present in gnomAD-Canada v1.0 (AF= 0.006462474204409688, 119/18414 alleles, homozygotes = 0).
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.06).
11 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= 0.00365706; MAF= 0.36571%, 5902/1613864 alleles, homozygotes = 90) and has highest observed frequency in the South Asian population (AF= 0.0326507; MAF= 3.26507%, 2972/91024 alleles, homozygotes = 85); grpmax FAF= 0.0316716.
This variant is present in gnomAD v2.1 (AF= 0.00495856; MAF= 0.49586%, 1400/282340 alleles, homozygotes = 29) and has highest observed frequency in the South Asian population (AF= 0.0324229; MAF= 3.24229%, 990/30534 alleles, homozygotes = 27); grpmax FAF= 0.0307466.
This variant is present in gnomAD-Canada v1.0 (AF= 0.006462474204409688, 119/18414 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Benign (14 clinical laboratories) and as Likely benign (9 clinical laboratories). (ClinVarID = 184123)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.06).
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; COSV62201020, n = 4 times).
This variant does not lie in a statistically significant hotspot.