Genetic Variant SEMA4C:p.His804Gln (chr2-96860716-G-T) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_017789.5(SEMA4C):c.2412C>A(p.His804Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000105 in 1,613,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

SEMA4C
NM_017789.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.634

Publications

0 publications found

Variant links:

Genes affected

SEMA4C (HGNC:10731): (semaphorin 4C) Predicted to enable chemorepellent activity and semaphorin receptor binding activity. Involved in muscle cell differentiation and positive regulation of stress-activated MAPK cascade. Located in extracellular space. [provided by Alliance of Genome Resources, Apr 2022]

SEMA4C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.034385085).

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEMA4C	NM_017789.5 link	c.2412C>A	p.His804Gln	missense_variant	Exon 15 of 15	ENST00000305476.10	NP_060259.4	Q9C0C4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SEMA4C	ENST00000305476.10 link	c.2412C>A	p.His804Gln	missense_variant	Exon 15 of 15	1	NM_017789.5	ENSP00000306844.5	Q9C0C4
SEMA4C	ENST00000467747.1 link	n.2403C>A		non_coding_transcript_exon_variant	Exon 3 of 3	2
SEMA4C	ENST00000474420.1 link	n.1645C>A		non_coding_transcript_exon_variant	Exon 2 of 2	2
SEMA4C	ENST00000482925.5 link	n.2802C>A		non_coding_transcript_exon_variant	Exon 13 of 13	2

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

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

GnomAD2 exomes

AF:

0.0000239

AC:

AN:

250972

AF XY:

0.0000295

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1461434

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727046

show subpopulations

African (AFR)

AF:

0.000179

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53024

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111962

Other (OTH)

AF:

0.00

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.506

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74360

show subpopulations

African (AFR)

AF:

0.000217

AC:

AN:

41446

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2094

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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 14, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2412C>A (p.H804Q) alteration is located in exon 15 (coding exon 14) of the SEMA4C gene. This alteration results from a C to A substitution at nucleotide position 2412, causing the histidine (H) at amino acid position 804 to be replaced by a glutamine (Q). 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

Benign

0.081

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.61

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.55

LIST_S2

Benign

0.62

M_CAP

Benign

0.0036

MetaRNN

Benign

0.034

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

PhyloP100

0.63

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-0.68

REVEL

Benign

0.026

Sift

Benign

0.18

Sift4G

Benign

0.13

Polyphen

0.024

Vest4

0.14

MutPred

0.11

Loss of methylation at R799 (P = 0.0794);

MVP

0.13

MPC

0.29

ClinPred

0.014

GERP RS

0.75

Varity_R

0.060

gMVP

0.16

Mutation Taster

=88/12

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

2-96860716-G-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over