1-64049766-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_005012.4(ROR1):c.239A>G(p.Lys80Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: ROR1 NM_005012.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.79

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, ROR1
• BP4: Computational evidence support a benign effect (MetaRNN=0.14393485).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ROR1	NM_005012.4	c.239A>G	p.Lys80Arg	missense_variant	3/9	ENST00000371079.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ROR1	ENST00000371079.6	c.239A>G	p.Lys80Arg	missense_variant	3/9	1	NM_005012.4	P1
ROR1	ENST00000371080.5	c.239A>G	p.Lys80Arg	missense_variant	3/7	1
ROR1	ENST00000482426.1	n.273A>G		non_coding_transcript_exon_variant	3/6	5

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152140 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 35

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152140 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74334

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000192

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

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

Dec 16, 2023

The c.239A>G (p.K80R) alteration is located in exon 3 (coding exon 3) of the ROR1 gene. This alteration results from a A to G substitution at nucleotide position 239, causing the lysine (K) at amino acid position 80 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	Benign	0.079
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
Cadd	Benign	13
Dann	Uncertain	0.99
Eigen	Benign	-0.55
Eigen_PC	Benign	-0.38
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.81	T;T;T
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.14	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-0.14	N;N;.
MutationTaster	Benign	0.55	D;D
PrimateAI	Uncertain	0.48	T
PROVEAN	Benign	-1.0	N;N;.
REVEL	Benign	0.047
Sift	Benign	0.33	T;T;.
Sift4G	Benign	0.37	T;T;T
Polyphen		0.0050	.;B;.
Vest4		0.13
MutPred		0.51		Loss of methylation at K80 (P = 0.0132);Loss of methylation at K80 (P = 0.0132);.;
MVP		0.46
MPC		0.38
ClinPred		0.37	T
GERP RS		0.98
Varity_R		0.12
gMVP		0.61

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: rs1318530928; hg19: chr1-64515438;