Genetic Variant NSMAF:c.1126-17_1126-12dupTTTTTT (chr8-58601546-G-GAAAAAA) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_003580.4(NSMAF):c.1126-17_1126-12dupTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000273 in 1,307,760 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 0)

Exomes 𝑓: 0.00027 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

NSMAF
NM_003580.4 intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.861

Publications

0 publications found

Variant links:

Genes affected

NSMAF (HGNC:8017): (neutral sphingomyelinase activation associated factor) This gene encodes a WD-repeat protein that binds the cytoplasmic sphingomyelinase activation domain of the 55kD tumor necrosis factor receptor. This protein is required for TNF-mediated activation of neutral sphingomyelinase and may play a role in regulating TNF-induced cellular responses such as inflammation. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Jan 2009]

NSMAF links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NSMAF	NM_003580.4 link	c.1126-17_1126-12dupTTTTTT		intron_variant	Intron 14 of 30	ENST00000038176.8	NP_003571.2	Q92636-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
NSMAF	ENST00000038176.8 link	c.1126-17_1126-12dupTTTTTT	intron_variant	Intron 14 of 30	1	NM_003580.4	ENSP00000038176.3	Q92636-1
NSMAF	ENST00000427130.7 link	c.1219-17_1219-12dupTTTTTT	intron_variant	Intron 14 of 30	2		ENSP00000411012.2	Q92636-2
NSMAF	ENST00000519858.1 link	n.665-17_665-12dupTTTTTT	intron_variant	Intron 7 of 8	3
NSMAF	ENST00000649465.1 link	n.1252-17_1252-12dupTTTTTT	intron_variant	Intron 16 of 32			ENSP00000498107.1	E5RGU2

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

135476

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000273

AC:

357

AN:

1307760

Hom.:

Cov.:

AF XY:

0.000301

AC XY:

194

AN XY:

645026

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.000108

AC:

AN:

27756

American (AMR)

AF:

0.000735

AC:

AN:

21760

Ashkenazi Jewish (ASJ)

AF:

0.000590

AC:

AN:

20322

East Asian (EAS)

AF:

0.000347

AC:

AN:

34590

South Asian (SAS)

AF:

0.00126

AC:

AN:

64086

European-Finnish (FIN)

AF:

0.000216

AC:

AN:

41684

Middle Eastern (MID)

AF:

0.000219

AC:

AN:

4576

European-Non Finnish (NFE)

AF:

0.000203

AC:

211

AN:

1038906

Other (OTH)

AF:

0.000222

AC:

AN:

54080

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.296

Heterozygous variant carriers

119

149

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

135476

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

65156

African (AFR)

AF:

0.00

AC:

AN:

36826

American (AMR)

AF:

0.00

AC:

AN:

13768

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3312

East Asian (EAS)

AF:

0.00

AC:

AN:

4510

South Asian (SAS)

AF:

0.00

AC:

AN:

4326

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6946

Middle Eastern (MID)

AF:

0.00

AC:

AN:

280

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

62832

Other (OTH)

AF:

0.00

AC:

AN:

1862

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.86

Splicing

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over