1-222628067-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_198551.4(MIA3):c.847G>T(p.Ala283Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MIA3 NM_198551.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.32

Genes affected

MIA3 (HGNC:24008): (MIA SH3 domain ER export factor 3) Enables cargo receptor activity. Involved in several processes, including COPII-coated vesicle cargo loading; cell migration involved in sprouting angiogenesis; and regulation of leukocyte migration. Located in endoplasmic reticulum exit site and endoplasmic reticulum membrane. Is integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.27519673).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MIA3	NM_198551.4	c.847G>T	p.Ala283Ser	missense_variant	4/28	ENST00000344922.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MIA3	ENST00000344922.10	c.847G>T	p.Ala283Ser	missense_variant	4/28	5	NM_198551.4	P1
MIA3	ENST00000470521.1	n.859G>T		non_coding_transcript_exon_variant	4/7	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 02, 2021

The c.847G>T (p.A283S) alteration is located in exon 4 (coding exon 4) of the MIA3 gene. This alteration results from a G to T substitution at nucleotide position 847, causing the alanine (A) at amino acid position 283 to be replaced by a serine (S). 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	0.18
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
Cadd	Benign	23
Dann	Uncertain	1.0
DEOGEN2	Benign	0.084	T;.
Eigen	Pathogenic	0.73
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.83	T;T
M_CAP	Benign	0.036	D
MetaRNN	Benign	0.28	T;T
MetaSVM	Benign	-0.40	T
MutationTaster	Benign	0.56	D;N;N
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	-1.9	N;N
REVEL	Benign	0.17
Sift	Uncertain	0.0040	D;D
Sift4G	Benign	0.25	T;T
Polyphen		1.0	D;.
Vest4		0.29
MutPred		0.16		Gain of phosphorylation at A283 (P = 0.0362);Gain of phosphorylation at A283 (P = 0.0362);
MVP		0.48
MPC		0.34
ClinPred		0.91	D
GERP RS		5.2
Varity_R		0.16
gMVP		0.026

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

LitVar

Other links and lift over

dbSNP: rs1662200964; hg19: chr1-222801409;