rs112306990

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 1P and 13B. PP2BP4_StrongBP6BS1BS2

The NM_001042492.3(NF1):​c.528T>A​(p.Asp176Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00412 in 1,612,888 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0037 ( 5 hom., cov: 32)
Exomes 𝑓: 0.0042 ( 12 hom. )

Consequence

NF1
NM_001042492.3 missense

Scores

2
8
8

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:24O:1

Conservation

PhyloP100: 2.08
Variant links:
Genes affected
NF1 (HGNC:7765): (neurofibromin 1) This gene product appears to function as a negative regulator of the ras signal transduction pathway. Mutations in this gene have been linked to neurofibromatosis type 1, juvenile myelomonocytic leukemia and Watson syndrome. The mRNA for this gene is subject to RNA editing (CGA>UGA->Arg1306Term) resulting in premature translation termination. Alternatively spliced transcript variants encoding different isoforms have also been described for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

PP2
Missense variant in the NF1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 399 curated pathogenic missense variants (we use a threshold of 10). The gene has 143 curated benign missense variants. Gene score misZ: 6.5427 (above the threshold of 3.09). Trascript score misZ: 8.4054 (above the threshold of 3.09). GenCC associations: The gene is linked to neurofibromatosis, familial spinal, hereditary pheochromocytoma-paraganglioma, neurofibromatosis type 1, Watson syndrome, neurofibromatosis-Noonan syndrome, Moyamoya disease, familial ovarian cancer.
BP4
Computational evidence support a benign effect (MetaRNN=0.010571599).
BP6
Variant 17-31169939-T-A is Benign according to our data. Variant chr17-31169939-T-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 41673.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=7, Benign=12, Uncertain_significance=1, not_provided=1}. Variant chr17-31169939-T-A is described in Lovd as [Benign]. Variant chr17-31169939-T-A is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00375 (571/152322) while in subpopulation NFE AF= 0.00542 (369/68034). AF 95% confidence interval is 0.00497. There are 5 homozygotes in gnomad4. There are 275 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High AC in GnomAd4 at 571 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NF1NM_001042492.3 linkc.528T>A p.Asp176Glu missense_variant Exon 5 of 58 ENST00000358273.9 NP_001035957.1 P21359-1
NF1NM_000267.3 linkc.528T>A p.Asp176Glu missense_variant Exon 5 of 57 NP_000258.1 P21359-2
NF1NM_001128147.3 linkc.528T>A p.Asp176Glu missense_variant Exon 5 of 15 NP_001121619.1 P21359-5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NF1ENST00000358273.9 linkc.528T>A p.Asp176Glu missense_variant Exon 5 of 58 1 NM_001042492.3 ENSP00000351015.4 P21359-1

Frequencies

GnomAD3 genomes
AF:
0.00375
AC:
571
AN:
152204
Hom.:
5
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000917
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00196
Gnomad ASJ
AF:
0.00115
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.0119
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00542
Gnomad OTH
AF:
0.00191
GnomAD3 exomes
AF:
0.00348
AC:
873
AN:
251164
Hom.:
6
AF XY:
0.00359
AC XY:
488
AN XY:
135812
show subpopulations
Gnomad AFR exome
AF:
0.000493
Gnomad AMR exome
AF:
0.000954
Gnomad ASJ exome
AF:
0.000893
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000980
Gnomad FIN exome
AF:
0.0118
Gnomad NFE exome
AF:
0.00479
Gnomad OTH exome
AF:
0.00360
GnomAD4 exome
AF:
0.00416
AC:
6074
AN:
1460566
Hom.:
12
Cov.:
30
AF XY:
0.00407
AC XY:
2954
AN XY:
726612
show subpopulations
Gnomad4 AFR exome
AF:
0.000598
Gnomad4 AMR exome
AF:
0.00107
Gnomad4 ASJ exome
AF:
0.000919
Gnomad4 EAS exome
AF:
0.0000253
Gnomad4 SAS exome
AF:
0.000128
Gnomad4 FIN exome
AF:
0.0102
Gnomad4 NFE exome
AF:
0.00469
Gnomad4 OTH exome
AF:
0.00360
GnomAD4 genome
AF:
0.00375
AC:
571
AN:
152322
Hom.:
5
Cov.:
32
AF XY:
0.00369
AC XY:
275
AN XY:
74484
show subpopulations
Gnomad4 AFR
AF:
0.000914
Gnomad4 AMR
AF:
0.00196
Gnomad4 ASJ
AF:
0.00115
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.0119
Gnomad4 NFE
AF:
0.00542
Gnomad4 OTH
AF:
0.00189
Alfa
AF:
0.00448
Hom.:
1
Bravo
AF:
0.00292
TwinsUK
AF:
0.00485
AC:
18
ALSPAC
AF:
0.00415
AC:
16
ESP6500AA
AF:
0.000681
AC:
3
ESP6500EA
AF:
0.00488
AC:
42
ExAC
AF:
0.00327
AC:
397
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.00371
EpiControl
AF:
0.00427

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:24Other:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not specified Benign:8Other:1
Oct 20, 2016
Genetic Services Laboratory, University of Chicago
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
PreventionGenetics, part of Exact Sciences
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Sep 16, 2020
Athena Diagnostics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Sep 19, 2013
ITMI
Significance: not provided
Review Status: no classification provided
Collection Method: reference population

- -

-
Genome Diagnostics Laboratory, Amsterdam University Medical Center
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Nov 27, 2017
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: The NF1 c.528T>A (p.Asp176Glu) variant involves the alteration of a non-conserved nucleotide and is predicted to be damaging by 3/5 in silico tools. This variant was found in 1021/277004 control chromosomes (gnomAD), predominantly observed in the European (Finnish) subpopulation at a frequency of 0.011683 (301/25764). This frequency is about 56 times the estimated maximal expected allele frequency of a pathogenic NF1 variant (0.0002084), suggesting this is likely a benign polymorphism found primarily in the populations of European (Finnish) origin. This variant has been reported in several patients with neurofibromatosis type 1, including evidence of lack of cosegregation with disease and co-occurrence with other pathogenic variants in the same gene (Fahsold_2000, Ars_2003, and Nemethova_2013), strongly supporting for the benign outcome. In addition, multiple clinical diagnostic laboratories/reputable databases have classified this variant as benign. Taken together, this variant is classified as Benign. -

Jun 22, 2015
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

p.Asp176Glu in exon 5 of NF1: This variant is not expected to have clinical sign ificance because it has been identified in 1% (67/6564) of Finnish chromosomes a nd 0.5% (307/66442) of European chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs112306990). -

not provided Benign:7
-
Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)
Significance: Likely benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Sep 16, 2024
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Nov 03, 2021
Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

May 24, 2016
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Jul 13, 2012
Biesecker Lab/Clinical Genomics Section, National Institutes of Health
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: research

- -

Jan 03, 2017
Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 01, 2025
CeGaT Center for Human Genetics Tuebingen
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

NF1: BS2 -

Neurofibromatosis, type 1 Uncertain:1Benign:4
May 28, 2019
Mendelics
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Feb 04, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Nov 01, 2016
Center for Human Genetics, Inc, Center for Human Genetics, Inc
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Oct 26, 2020
Genome Diagnostics Laboratory, The Hospital for Sick Children
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome Benign:2
Jul 14, 2014
Ambry Genetics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Co-occurence with a mutation in another gene that clearly explains a proband's phenotype;Does not segregate with disease in family study (genes with incomplete penetrance);Other strong data supporting benign classification -

Jul 15, 2020
Sema4, Sema4
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: curation

- -

Neurofibromatosis-Noonan syndrome Benign:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Neurofibromatosis, familial spinal Benign:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Café-au-lait macules with pulmonary stenosis Benign:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.94
BayesDel_addAF
Benign
-0.15
T
BayesDel_noAF
Uncertain
0.030
CADD
Benign
21
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.63
.;D;.;.
Eigen
Benign
0.092
Eigen_PC
Benign
0.13
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Uncertain
0.89
D;D;D;D
MetaRNN
Benign
0.011
T;T;T;T
MetaSVM
Benign
-0.41
T
MutationAssessor
Uncertain
2.0
M;M;M;M
PrimateAI
Pathogenic
0.80
T
PROVEAN
Uncertain
-2.4
.;N;N;D
REVEL
Uncertain
0.64
Sift
Benign
0.24
.;T;T;T
Sift4G
Benign
0.11
.;T;T;D
Polyphen
0.40
B;D;P;.
Vest4
0.75, 0.76, 0.79
MutPred
0.79
Gain of helix (P = 0.062);Gain of helix (P = 0.062);Gain of helix (P = 0.062);Gain of helix (P = 0.062);
MVP
0.86
MPC
0.72
ClinPred
0.020
T
GERP RS
3.4
Varity_R
0.20
gMVP
0.54

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs112306990; hg19: chr17-29496957; COSMIC: COSV62191719; API