17-46514949-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 1P and 2B. PP2 BP4_Moderate

The NM_001006607.3(LRRC37A2):c.2237C>T(p.Thr746Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 7)
• Consequence: LRRC37A2 NM_001006607.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0750

Genes affected

LRRC37A2 (HGNC:32404): (leucine rich repeat containing 37 member A2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ARL17A (HGNC:24096): (ADP ribosylation factor like GTPase 17A) Predicted to enable GTP binding activity. Predicted to be involved in intracellular protein transport and vesicle-mediated transport. Predicted to be located in Golgi apparatus. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PP2: Missense variant where missense usually causes diseases, LRRC37A2
• BP4: Computational evidence support a benign effect (MetaRNN=0.12923375).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LRRC37A2	NM_001006607.3	c.2237C>T	p.Thr746Ile	missense_variant	1/14	ENST00000576629.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LRRC37A2	ENST00000576629.6	c.2237C>T	p.Thr746Ile	missense_variant	1/14	5	NM_001006607.3	P1

Frequencies

GnomAD3 genomes Cov.: 7

GnomAD4 exome Cov.: 5

GnomAD4 genome Cov.: 7

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

May 17, 2023

The c.2237C>T (p.T746I) alteration is located in exon 1 (coding exon 1) of the LRRC37A2 gene. This alteration results from a C to T substitution at nucleotide position 2237, causing the threonine (T) at amino acid position 746 to be replaced by an isoleucine (I). 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	0.14
BayesDel_addAF	Benign	-0.095	T
BayesDel_noAF	Benign	-0.37
Cadd	Benign	5.2
Dann	Uncertain	1.0
DEOGEN2	Benign	0.0083	T;T
Eigen	Benign	-0.66
Eigen_PC	Benign	-0.89
FATHMM_MKL	Benign	0.0026	N
M_CAP	Benign	0.0099	T
MetaRNN	Benign	0.13	T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.4	L;L
MutationTaster	Benign	1.0	N;N
PrimateAI	Uncertain	0.65	T
Sift4G	Uncertain	0.031	D;D
Polyphen		0.91	P;P
Vest4		0.15
MutPred		0.20		Loss of glycosylation at T746 (P = 0.0043);Loss of glycosylation at T746 (P = 0.0043);
MVP		0.072
ClinPred		0.32	T
GERP RS		-1.5
Varity_R		0.081
gMVP		0.070

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: chr17-44592315;