X-3310311-A-C

Position:

• chrX-3310311-A-C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_015419.4(MXRA5):​c.7892T>G​(p.Leu2631Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 22)
  • Exomes 𝑓: 9.2e-7 (0 hom. 1 hem.)
  • Failed GnomAD Quality Control
• Consequence: MXRA5 NM_015419.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.95

Genes affected

MXRA5 (HGNC:7539): (matrix remodeling associated 5) This gene encodes one of the matrix-remodelling associated proteins. This protein contains 7 leucine-rich repeats and 12 immunoglobulin-like C2-type domains related to perlecan. This gene has a pseudogene on chromosome Y. [provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.978

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MXRA5	NM_015419.4	c.7892T>G	p.Leu2631Arg	missense_variant	7/7	ENST00000217939.7	NP_056234.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MXRA5	ENST00000217939.7	c.7892T>G	p.Leu2631Arg	missense_variant	7/7	5	NM_015419.4	ENSP00000217939	P1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 9.15e-7 AC: 1 AN: 1092769 Hom.: 0 Cov.: 31 AF XY: 0.00000279 AC XY: 1 AN XY: 358409

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000119

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 22

Bravo AF: 0.00000378

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

Sep 06, 2022

The c.7892T>G (p.L2631R) alteration is located in exon 7 (coding exon 6) of the MXRA5 gene. This alteration results from a T to G substitution at nucleotide position 7892, causing the leucine (L) at amino acid position 2631 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	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.72	D
BayesDel_noAF	Pathogenic	0.79
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.24	T
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.84	T
M_CAP	Pathogenic	0.51	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Pathogenic	0.92	D
MutationAssessor	Pathogenic	4.4	H
MutationTaster	Benign	1.0	N;N
PrimateAI	Uncertain	0.76	T
PROVEAN	Pathogenic	-5.9	D
REVEL	Pathogenic	0.72
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.87
MutPred		0.84		Loss of stability (P = 7e-04);
MVP		0.55
MPC		0.46
ClinPred		1.0	D
GERP RS		4.2
Varity_R		0.94
gMVP		0.96

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: rs1277648368; hg19: chrX-3228352;