12-104304077-T-G

Variant names:

• chr12-104304077-T-G
• rs780154923
• NM_001008394.3:c.143T>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001008394.3(EID3):​c.143T>G​(p.Met48Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,606 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M48I) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: EID3 NM_001008394.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.75
• Publications: 0 publications found

Genes affected

EID3 (HGNC:32961): (EP300 interacting inhibitor of differentiation 3) Predicted to be involved in DNA repair. Located in nucleolus and nucleoplasm. Part of Smc5-Smc6 complex. [provided by Alliance of Genome Resources, Apr 2022]

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: Uncertain_significance. The variant received 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
EID3	NM_001008394.3	c.143T>G	p.Met48Arg	missense_variant	Exon 1 of 1	ENST00000527879.2	NP_001008395.1
TXNRD1	NM_001093771.3	c.415-7213T>G		intron_variant	Intron 4 of 16	ENST00000525566.6	NP_001087240.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EID3	ENST00000527879.2	c.143T>G	p.Met48Arg	missense_variant	Exon 1 of 1	6	NM_001008394.3	ENSP00000435619.1
TXNRD1	ENST00000525566.6	c.415-7213T>G		intron_variant	Intron 4 of 16	1	NM_001093771.3	ENSP00000434516.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000121 AC: 3 AN: 248742 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000167

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461606 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727092

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53300

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111870

Other (OTH) AF: 0.00 AC: 0 AN: 60374

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jan 02, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.143T>G (p.M48R) alteration is located in exon 1 (coding exon 1) of the EID3 gene. This alteration results from a T to G substitution at nucleotide position 143, causing the methionine (M) at amino acid position 48 to be replaced by an arginine (R). 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	Uncertain	0.44
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	23
DANN	Benign	0.97
DEOGEN2	Benign	0.035	T
Eigen	Benign	-0.28
Eigen_PC	Benign	-0.12
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.50	T
M_CAP	Benign	0.032	D
MetaRNN	Uncertain	0.43	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.90	L
PhyloP100		3.7
PrimateAI	Uncertain	0.50	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.083
Sift	Benign	0.052	T
Sift4G	Uncertain	0.0020	D
Polyphen		0.022	B
Vest4		0.35
MutPred		0.69		Gain of disorder (P = 0.0208);
MVP		0.37
MPC		0.37
ClinPred		0.37	T
GERP RS		4.7
PromoterAI		0.10	Neutral
Varity_R		0.62
gMVP		0.42
Mutation Taster		=75/25	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.16		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: rs780154923; hg19: chr12-104697855;