Genetic Variant SEMA6D:p.Pro29Ser (chr15-47759883-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001358351.3(SEMA6D):c.85C>T(p.Pro29Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000657 in 152,170 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Consequence

SEMA6D
NM_001358351.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.31

Variant links:

Genes affected

SEMA6D (HGNC:16770): (semaphorin 6D) Semaphorins are a large family, including both secreted and membrane associated proteins, many of which have been implicated as inhibitors or chemorepellents in axon pathfinding, fasciculation and branching, and target selection. All semaphorins possess a semaphorin (Sema) domain and a PSI domain (found in plexins, semaphorins and integrins) in the N-terminal extracellular portion. Additional sequence motifs C-terminal to the semaphorin domain allow classification into distinct subfamilies. Results demonstrate that transmembrane semaphorins, like the secreted ones, can act as repulsive axon guidance cues. This gene encodes a class 6 vertebrate transmembrane semaphorin that demonstrates alternative splicing. Several transcript variants have been identified and expression of the distinct encoded isoforms is thought to be regulated in a tissue- and development-dependent manner. [provided by RefSeq, Nov 2010]

SEMA6D links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEMA6D	NM_001358351.3 link	c.85C>T	p.Pro29Ser	missense_variant	Exon 2 of 19	ENST00000536845.7	NP_001345280.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SEMA6D	ENST00000536845.7 link	c.85C>T	p.Pro29Ser	missense_variant	Exon 2 of 19	2	NM_001358351.3	ENSP00000446152.3		Q8NFY4-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152170

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:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.85C>T (p.P29S) alteration is located in exon 2 (coding exon 1) of the SEMA6D gene. This alteration results from a C to T substitution at nucleotide position 85, causing the proline (P) at amino acid position 29 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.63

BayesDel_addAF

Uncertain

0.098

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

.;T;T;.;.;.;T;.;.;.;.

Eigen

Pathogenic

0.86

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.88

.;D;.;.;D;D;D;D;D;D;D

M_CAP

Uncertain

0.088

MetaRNN

Uncertain

0.66

D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

-0.15

MutationAssessor

Uncertain

2.8

M;.;M;M;M;M;M;M;M;M;.

PrimateAI

Uncertain

0.52

PROVEAN

Pathogenic

-6.8

D;D;D;D;D;D;D;D;D;D;D

REVEL

Uncertain

0.35

Sift

Pathogenic

0.0

D;D;D;D;D;D;D;D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D;D;D;D;D;D;D;D

Polyphen

1.0

D;.;D;.;.;.;D;D;D;D;.

Vest4

0.77

MutPred

0.44

Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);Gain of phosphorylation at P29 (P = 0.0977);

MVP

0.43

MPC

1.7

ClinPred

1.0

GERP RS

5.4

Varity_R

0.87

gMVP

0.73

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over