1-64140379-C-T

Position:

• chr1-64140379-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_005012.4(ROR1):​c.881C>T​(p.Ala294Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,842 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A294A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: ROR1 NM_005012.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.25

Genes affected

ROR1 (HGNC:10256): (receptor tyrosine kinase like orphan receptor 1) This gene encodes a receptor tyrosine kinase-like orphan receptor that modulates neurite growth in the central nervous system. The encoded protein is a glycosylated type I membrane protein that belongs to the ROR subfamily of cell surface receptors. It is a pseudokinase that lacks catalytic activity and may interact with the non-canonical Wnt signalling pathway. This gene is highly expressed during early embryonic development but expressed at very low levels in adult tissues. Increased expression of this gene is associated with B-cell chronic lymphocytic leukaemia. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jun 2012]

ROR1-AS1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ROR1. . Gene score misZ 2.1715 (greater than the threshold 3.09). Trascript score misZ 3.1383 (greater than threshold 3.09). GenCC has associacion of gene with nonsyndromic genetic hearing loss, hearing loss, autosomal recessive 108, hearing loss, autosomal recessive.
• BP4: Computational evidence support a benign effect (MetaRNN=0.29956537).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ROR1	NM_005012.4	c.881C>T	p.Ala294Val	missense_variant	6/9	ENST00000371079.6	NP_005003.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ROR1	ENST00000371079.6	c.881C>T	p.Ala294Val	missense_variant	6/9	1	NM_005012.4	ENSP00000360120.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000120 AC: 3 AN: 250816 Hom.: 0 AF XY: 0.0000148 AC XY: 2 AN XY: 135568

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.0000462

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461842 Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8 AN XY: 727224

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000447

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.0000187

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 16, 2022

This variant has not been reported in the literature in individuals affected with ROR1-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 1507172). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 294 of the ROR1 protein (p.Ala294Val). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.086
BayesDel_addAF	Benign	-0.057	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.17	.;T;.
Eigen	Benign	0.076
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.87	D;D;D
M_CAP	Benign	0.0075	T
MetaRNN	Benign	0.30	T;T;T
MetaSVM	Benign	-0.80	T
MutationAssessor	Uncertain	2.1	M;M;.
PrimateAI	Uncertain	0.57	T
PROVEAN	Benign	-2.3	N;N;.
REVEL	Benign	0.27
Sift	Benign	0.070	T;T;.
Sift4G	Uncertain	0.018	D;T;T
Polyphen		0.014	.;B;.
Vest4		0.18
MutPred		0.69		Loss of disorder (P = 0.0557);Loss of disorder (P = 0.0557);.;
MVP		0.56
MPC		0.47
ClinPred		0.23	T
GERP RS		6.2
Varity_R		0.046
gMVP		0.69

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: rs765400955; hg19: chr1-64606062; COSMIC: COSV100935815; COSMIC: COSV100935815;