chr1-70023336-G-C

Position:

• chr1-70023336-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001370785.2(LRRC7):​c.1756G>C​(p.Ala586Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: LRRC7 NM_001370785.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.81

Genes affected

LRRC7 (HGNC:18531): (leucine rich repeat containing 7) Predicted to be involved in several processes, including establishment or maintenance of epithelial cell apical/basal polarity; positive regulation of neuron projection development; and receptor clustering. Located in several cellular components, including centrosome; cytosol; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

LRRC7-AS1 (HGNC:40843): (LRRC7 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LRRC7	NM_001370785.2	c.1756G>C	p.Ala586Pro	missense_variant	17/27	ENST00000651989.2
LRRC7-AS1	XR_001738107.2	n.4709-938C>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LRRC7	ENST00000651989.2	c.1756G>C	p.Ala586Pro	missense_variant	17/27		NM_001370785.2	P1
LRRC7-AS1	ENST00000414132.5	n.92-938C>G		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

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

Aug 08, 2022

The c.1642G>C (p.A548P) alteration is located in exon 15 (coding exon 15) of the LRRC7 gene. This alteration results from a G to C substitution at nucleotide position 1642, causing the alanine (A) at amino acid position 548 to be replaced by a proline (P). 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
BayesDel_addAF	Uncertain	0.077	D
BayesDel_noAF	Benign	-0.13
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.014	T;T
Eigen	Benign	-0.098
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.85	D;D
M_CAP	Benign	0.0029	T
MetaRNN	Uncertain	0.46	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.76	.;N
MutationTaster	Benign	0.95	D;D
PrimateAI	Uncertain	0.65	T
PROVEAN	Benign	-0.66	N;N
REVEL	Benign	0.13
Sift	Uncertain	0.0080	D;D
Sift4G	Uncertain	0.024	.;D
Polyphen		0.0020	.;B
Vest4		0.67
MutPred		0.29		.;Gain of sheet (P = 0.0125);
MVP		0.72
MPC		0.29
ClinPred		0.80	D
GERP RS		5.9
Varity_R		0.29
gMVP		0.49

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs1657717968; hg19: chr1-70489019;