dbSNP rs2285894: NF1:c.5609+19T>A (chr17-31327858-T-A) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001042492.3(NF1):c.5609+19T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.581 in 1,605,644 control chromosomes in the GnomAD database, including 278,086 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.50 ( 20825 hom., cov: 31)

Exomes 𝑓: 0.59 ( 257261 hom. )

Consequence

NF1
NM_001042492.3 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: -1.06

Publications

25 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: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
neurofibromatosis-Noonan syndrome
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
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

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=-0.89).

BP6

Variant 17-31327858-T-A is Benign according to our data. Variant chr17-31327858-T-A is described in ClinVar as Benign. ClinVar VariationId is 257294.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.614 is higher than 0.05.

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.5609+19T>A		intron	N/A	NP_001035957.1	P21359-1
	NF1	NM_000267.4		c.5546+19T>A		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.5609+19T>A	intron	N/A	ENSP00000351015.4	P21359-1
NF1	ENST00000356175.7	TSL:1	c.5546+19T>A	intron	N/A	ENSP00000348498.3	P21359-2
NF1	ENST00000579081.6	TSL:1	n.*774+19T>A	intron	N/A	ENSP00000462408.2	J3KSB5

Frequencies

GnomAD3 genomes

AF:

0.502

AC:

76225

AN:

151886

Hom.:

20816

Cov.:

show subpopulations

Gnomad AFR

AF:

0.293

Gnomad AMI

AF:

0.678

Gnomad AMR

AF:

0.446

Gnomad ASJ

AF:

0.684

Gnomad EAS

AF:

0.358

Gnomad SAS

AF:

0.563

Gnomad FIN

AF:

0.601

Gnomad MID

AF:

0.589

Gnomad NFE

AF:

0.619

Gnomad OTH

AF:

0.531

GnomAD2 exomes

AF:

0.535

AC:

133633

AN:

249712

AF XY:

0.551

show subpopulations

Gnomad AFR exome

AF:

0.285

Gnomad AMR exome

AF:

0.377

Gnomad ASJ exome

AF:

0.686

Gnomad EAS exome

AF:

0.356

Gnomad FIN exome

AF:

0.600

Gnomad NFE exome

AF:

0.611

Gnomad OTH exome

AF:

0.567

GnomAD4 exome

AF:

0.589

AC:

856724

AN:

1453640

Hom.:

257261

Cov.:

AF XY:

0.591

AC XY:

427869

AN XY:

723682

show subpopulations

African (AFR)

AF:

0.280

AC:

9304

AN:

33240

American (AMR)

AF:

0.388

AC:

17326

AN:

44678

Ashkenazi Jewish (ASJ)

AF:

0.687

AC:

17928

AN:

26102

East Asian (EAS)

AF:

0.375

AC:

14862

AN:

39662

South Asian (SAS)

AF:

0.576

AC:

49528

AN:

86054

European-Finnish (FIN)

AF:

0.596

AC:

31780

AN:

53358

Middle Eastern (MID)

AF:

0.632

AC:

3116

AN:

4934

European-Non Finnish (NFE)

AF:

0.614

AC:

678440

AN:

1105520

Other (OTH)

AF:

0.573

AC:

34440

AN:

60092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

16864

33728

50592

67456

84320

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

18016

36032

54048

72064

90080

<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:

0.502

AC:

76260

AN:

152004

Hom.:

20825

Cov.:

AF XY:

0.499

AC XY:

37069

AN XY:

74296

show subpopulations

African (AFR)

AF:

0.294

AC:

12191

AN:

41466

American (AMR)

AF:

0.446

AC:

6808

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.684

AC:

2373

AN:

3470

East Asian (EAS)

AF:

0.358

AC:

1852

AN:

5172

South Asian (SAS)

AF:

0.561

AC:

2701

AN:

4814

European-Finnish (FIN)

AF:

0.601

AC:

6347

AN:

10552

Middle Eastern (MID)

AF:

0.589

AC:

172

AN:

292

European-Non Finnish (NFE)

AF:

0.619

AC:

42084

AN:

67942

Other (OTH)

AF:

0.528

AC:

1115

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

1793

3585

5378

7170

8963

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

672

1344

2016

2688

3360

<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:

0.569

Hom.:

4707

Bravo

AF:

0.480

Asia WGS

AF:

0.438

AC:

1523

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (6)

Neurofibromatosis, type 1 (3)

not provided (3)

Neurofibromatosis, familial spinal (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.89

CADD

Benign

0.21

(source)

DANN

Benign

0.57

PhyloP100

-1.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism (auto)

(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

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