Genetic Variant MAP1S:p.Gly8Ala (chr19-17719525-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018174.6(MAP1S):c.23G>C(p.Gly8Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000482 in 1,245,972 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G8V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000046 ( 0 hom. )

Consequence

MAP1S
NM_018174.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0160

Publications

1 publications found

Variant links:

Genes affected

MAP1S (HGNC:15715): (microtubule associated protein 1S) Enables DNA binding activity and cytoskeletal protein binding activity. Involved in microtubule bundle formation; neuron projection morphogenesis; and regulation of chromatin disassembly. Located in several cellular components, including microtubule cytoskeleton; nuclear lumen; and perinuclear region of cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

MAP1S links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.057884395).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAP1S	NM_018174.6 link	c.23G>C	p.Gly8Ala	missense_variant	Exon 1 of 7	ENST00000324096.9	NP_060644.4	Q66K74-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAP1S	ENST00000324096.9 link	c.23G>C	p.Gly8Ala	missense_variant	Exon 1 of 7	1	NM_018174.6	ENSP00000325313.3		Q66K74-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152104

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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:

0.00000457

AC:

AN:

1093752

Hom.:

Cov.:

AF XY:

0.00000774

AC XY:

AN XY:

516464

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

22948

American (AMR)

AF:

0.00

AC:

AN:

8398

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

14344

East Asian (EAS)

AF:

0.00

AC:

AN:

26476

South Asian (SAS)

AF:

0.000102

AC:

AN:

19530

European-Finnish (FIN)

AF:

0.00

AC:

AN:

35054

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3590

European-Non Finnish (NFE)

AF:

0.00000217

AC:

AN:

919652

Other (OTH)

AF:

0.0000229

AC:

AN:

43760

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74422

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41570

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.000194

AC:

AN:

5162

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67990

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.63

CADD

Benign

3.7

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.060

T;.;.

Eigen

Benign

-0.80

Eigen_PC

Benign

-0.95

FATHMM_MKL

Benign

0.067

LIST_S2

Benign

0.56

T;T;T

M_CAP

Benign

0.038

MetaRNN

Benign

0.058

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.90

L;.;.

PhyloP100

-0.016

PrimateAI

Uncertain

0.73

PROVEAN

Benign

0.21

N;.;.

REVEL

Benign

0.021

Sift

Benign

1.0

T;.;.

Sift4G

Benign

0.15

T;T;T

Polyphen

0.82

P;.;.

Vest4

0.17

MutPred

0.25

Loss of sheet (P = 0.0063);Loss of sheet (P = 0.0063);Loss of sheet (P = 0.0063);

MVP

0.41

MPC

0.30

ClinPred

0.086

GERP RS

1.3

PromoterAI

0.052

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.031

gMVP

0.22

Mutation Taster

=93/7

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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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chr19-17719525-G-C

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