6-7888793-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_030810.5(TXNDC5):c.875C>T(p.Ser292Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,614,008 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000019 (0 hom.)
• Consequence: TXNDC5 NM_030810.5 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.35

Genes affected

TXNDC5 (HGNC:21073): (thioredoxin domain containing 5) This gene encodes a member of the disulfide isomerase (PDI) family of endoplasmic reticulum (ER) proteins that catalyze protein folding and thiol-disulfide interchange reactions. The encoded protein has an N-terminal endoplasmic reticulum (ER)-signal sequence, three catalytically active thioredoxin domains and a C-terminal ER-retention sequence. Its expression is induced by hypoxia and its role may be to protect hypoxic cells from apoptosis. Alternative splicing results in multiple transcript variants. Read-through transcription also exists between this gene and the neighboring upstream BLOC1S5 gene. [provided by RefSeq, Dec 2016]

BLOC1S5-TXNDC5 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04507321).
• BP6: Variant 6-7888793-G-A is Benign according to our data. Variant chr6-7888793-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2597236.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TXNDC5	NM_030810.5	c.875C>T	p.Ser292Leu	missense_variant	7/10	ENST00000379757.9
BLOC1S5-TXNDC5	NR_037616.1	n.1034C>T		non_coding_transcript_exon_variant	10/13
TXNDC5	NM_001145549.4	c.551C>T	p.Ser184Leu	missense_variant	7/10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TXNDC5	ENST00000379757.9	c.875C>T	p.Ser292Leu	missense_variant	7/10	1	NM_030810.5	P1
TXNDC5	ENST00000473453.2	c.551C>T	p.Ser184Leu	missense_variant	7/10	1
TXNDC5	ENST00000460138.5	n.653C>T		non_coding_transcript_exon_variant	1/4	2
TXNDC5	ENST00000475802.1	n.169C>T		non_coding_transcript_exon_variant	1/4	2

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152224 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000579

Gnomad SAS AF: 0.00103

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000438 AC: 11 AN: 251160 Hom.: 0 AF XY: 0.0000442 AC XY: 6 AN XY: 135728

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000868

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad SAS exome AF: 0.000131

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000327

GnomAD4 exome AF: 0.0000192 AC: 28 AN: 1461784 Hom.: 0 Cov.: 31 AF XY: 0.0000275 AC XY: 20 AN XY: 727184

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000671

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.000209

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152224 Hom.: 0 Cov.: 33 AF XY: 0.000108 AC XY: 8 AN XY: 74370

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000579

Gnomad4 SAS AF: 0.00103

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.0000340

ExAC AF: 0.0000576 AC: 7

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 02, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.073
BayesDel_addAF	Benign	-0.43	T
BayesDel_noAF	Benign	-0.61
Cadd	Benign	15
Dann	Benign	0.91
DEOGEN2	Benign	0.10	T;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.72	T;T
M_CAP	Benign	0.0078	T
MetaRNN	Benign	0.045	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	L;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.35	T
PROVEAN	Uncertain	-2.5	D;D
REVEL	Benign	0.037
Sift	Benign	0.14	T;T
Sift4G	Benign	0.13	T;T
Polyphen		0.020	B;.
Vest4		0.18
MutPred		0.46		Loss of disorder (P = 0.0551);.;
MVP		0.36
MPC		0.12
ClinPred		0.031	T
GERP RS		0.92
Varity_R		0.11
gMVP		0.47

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs755033724; hg19: chr6-7889026; COSMIC: COSV65730236;