12-104311646-C-T

Variant names:

• chr12-104311646-C-T
• rs10861192
• NM_001093771.3:c.537+234C>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001093771.3(TXNRD1):​c.537+234C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.485 in 151,502 control chromosomes in the GnomAD database, including 18,220 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.48 (18220 hom., cov: 32)
• Consequence: TXNRD1 NM_001093771.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.962
• Publications: 3 publications found

Genes affected

TXNRD1 (HGNC:12437): (thioredoxin reductase 1) The protein encoded by this gene belongs to the pyridine nucleotide-disulfide oxidoreductase family, and is a member of the thioredoxin (Trx) system. Three thioredoxin reductase (TrxR) isozymes are found in mammals. TrxRs are selenocysteine-containing flavoenzymes, which reduce thioredoxins, as well as other substrates, and play a key role in redox homoeostasis. This gene encodes an ubiquitously expressed, cytosolic form of TrxR, which functions as a homodimer containing FAD, and selenocysteine (Sec) at the active site. Sec is encoded by UGA codon that normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, the Sec insertion sequence (SECIS) element, which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. Alternative splicing, primarily at the 5' end, results in transcript variants encoding same or different isoforms, including a glutaredoxin-containing isoform that is predominantly expressed in testis. [provided by RefSeq, May 2017]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.6 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TXNRD1	NM_001093771.3	c.537+234C>T		intron_variant	Intron 5 of 16	ENST00000525566.6	NP_001087240.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TXNRD1	ENST00000525566.6	c.537+234C>T		intron_variant	Intron 5 of 16	1	NM_001093771.3	ENSP00000434516.1

Frequencies

GnomAD3 genomes AF: 0.485 AC: 73400 AN: 151382 Hom.: 18209 Cov.: 32

Gnomad AFR AF: 0.373

Gnomad AMI AF: 0.540

Gnomad AMR AF: 0.503

Gnomad ASJ AF: 0.522

Gnomad EAS AF: 0.618

Gnomad SAS AF: 0.518

Gnomad FIN AF: 0.404

Gnomad MID AF: 0.468

Gnomad NFE AF: 0.545

Gnomad OTH AF: 0.519

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.485 AC: 73442 AN: 151502 Hom.: 18220 Cov.: 32 AF XY: 0.479 AC XY: 35424 AN XY: 74014

African (AFR) AF: 0.373 AC: 15414 AN: 41278

American (AMR) AF: 0.503 AC: 7657 AN: 15224

Ashkenazi Jewish (ASJ) AF: 0.522 AC: 1806 AN: 3462

East Asian (EAS) AF: 0.617 AC: 3170 AN: 5134

South Asian (SAS) AF: 0.519 AC: 2497 AN: 4814

European-Finnish (FIN) AF: 0.404 AC: 4230 AN: 10462

Middle Eastern (MID) AF: 0.459 AC: 134 AN: 292

European-Non Finnish (NFE) AF: 0.545 AC: 36944 AN: 67820

Other (OTH) AF: 0.522 AC: 1102 AN: 2112

Alfa AF: 0.515 Hom.: 8288

Bravo AF: 0.491

Asia WGS AF: 0.543 AC: 1886 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	2.0
DANN	Benign	0.57
PhyloP100		-0.96
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs10861192; hg19: chr12-104705424;