rs188244160

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001042492.3(NF1):c.6921+40A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000917 in 1,263,658 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00091 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00092 ( 6 hom. )

Consequence

NF1
NM_001042492.3 intron

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.0880

Publications

1 publications found

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]

NF1 Gene-Disease associations (from GenCC):

neurofibromatosis type 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae)
neurofibromatosis-Noonan syndrome
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
Moyamoya disease
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
hereditary pheochromocytoma-paraganglioma
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial ovarian cancer
Inheritance: Unknown Classification: NO_KNOWN Submitted by: ClinGen

NF1 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_001042492.3, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BP6

Variant 17-31338845-A-G is Benign according to our data. Variant chr17-31338845-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 257298.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000906 (138/152314) while in subpopulation EAS AF = 0.0191 (99/5188). AF 95% confidence interval is 0.016. There are 0 homozygotes in GnomAd4. There are 69 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 138 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001042492.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NF1	NM_001042492.3	MANE Select	c.6921+40A>G		intron	N/A	NP_001035957.1	P21359-1
	NF1	NM_000267.4		c.6858+40A>G		intron	N/A	NP_000258.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
NF1	ENST00000358273.9	TSL:1 MANE Select	c.6921+40A>G	intron	N/A	ENSP00000351015.4	P21359-1
NF1	ENST00000356175.7	TSL:1	c.6858+40A>G	intron	N/A	ENSP00000348498.3	P21359-2
NF1	ENST00000579081.6	TSL:1	n.*2086+40A>G	intron	N/A	ENSP00000462408.2	J3KSB5

Frequencies

GnomAD3 genomes

AF:

0.000900

AC:

137

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00519

Gnomad EAS

AF:

0.0188

Gnomad SAS

AF:

0.00227

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.00195

AC:

487

AN:

249642

AF XY:

0.00185

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00339

Gnomad EAS exome

AF:

0.0213

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000709

Gnomad OTH exome

AF:

0.000823

GnomAD4 exome

AF:

0.000919

AC:

1021

AN:

1111344

Hom.:

Cov.:

AF XY:

0.000946

AC XY:

538

AN XY:

568908

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26702

American (AMR)

AF:

0.00

AC:

AN:

44166

Ashkenazi Jewish (ASJ)

AF:

0.00405

AC:

AN:

23954

East Asian (EAS)

AF:

0.0184

AC:

697

AN:

37932

South Asian (SAS)

AF:

0.00176

AC:

139

AN:

78874

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53188

Middle Eastern (MID)

AF:

0.000196

AC:

AN:

5098

European-Non Finnish (NFE)

AF:

0.0000555

AC:

AN:

792514

Other (OTH)

AF:

0.000879

AC:

AN:

48916

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

106

158

211

264

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000906

AC:

138

AN:

152314

Hom.:

Cov.:

AF XY:

0.000926

AC XY:

AN XY:

74498

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41574

American (AMR)

AF:

0.000196

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00519

AC:

AN:

3466

East Asian (EAS)

AF:

0.0191

AC:

AN:

5188

South Asian (SAS)

AF:

0.00228

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68012

Other (OTH)

AF:

0.00142

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000538

Hom.:

Bravo

AF:

0.00131

Asia WGS

AF:

0.00694

AC:

AN:

3474

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.83

CADD

Benign

0.75

(source)

DANN

Benign

0.62

PhyloP100

-0.088

Mutation Taster

=100/0

polymorphism

(source)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over