chr10-100487639-T-C

Position:

• chr10-100487639-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015490.4(SEC31B):​c.3517A>G​(p.Ile1173Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,006 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SEC31B NM_015490.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.49

Genes affected

SEC31B (HGNC:23197): (SEC31 homolog B, COPII coat complex component) This gene encodes a protein of unknown function. The protein has moderate similarity to rat VAP1 protein which is an endosomal membrane-associated protein, containing a putative Ca2+/calmodulin-dependent kinase II phosphorylation site. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.16804284).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SEC31B	NM_015490.4	c.3517A>G	p.Ile1173Val	missense_variant	26/26	ENST00000370345.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SEC31B	ENST00000370345.8	c.3517A>G	p.Ile1173Val	missense_variant	26/26	1	NM_015490.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461006 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 726698

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 29, 2022

The c.3517A>G (p.I1173V) alteration is located in exon 26 (coding exon 25) of the SEC31B gene. This alteration results from a A to G substitution at nucleotide position 3517, causing the isoleucine (I) at amino acid position 1173 to be replaced by a valine (V). 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	0.10
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	17
DANN	Benign	0.57
DEOGEN2	Benign	0.0067	T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.19
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-0.090	N
REVEL	Benign	0.15
Sift	Benign	0.90	T
Sift4G	Benign	0.94	T
Polyphen		0.20	B
Vest4		0.26
MutPred		0.33		Loss of catalytic residue at L1178 (P = 0.0426);
MVP		0.37
MPC		0.033
ClinPred		0.23	T
GERP RS		4.7
Varity_R		0.025
gMVP		0.095

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr10-102247396;