chr1-207645238-C-T

Variant names:

• chr1-207645238-C-T
• rs553933937
• NM_175710.2:c.5C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_175710.2(CR1L):​c.5C>T​(p.Ala2Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,012 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A2T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: CR1L NM_175710.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.882
• Publications: 0 publications found

Genes affected

CR1L (HGNC:2335): (complement C3b/C4b receptor 1 like) Acts upstream of or within regulation of complement activation and regulation of complement-dependent cytotoxicity. Part of receptor complex. [provided by Alliance of Genome Resources, Apr 2022]

CD46P1 (HGNC:6959): (CD46 molecule pseudogene 1)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.04585144).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_175710.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CR1L	NM_175710.2	MANE Select	c.5C>T	p.Ala2Val	missense	Exon 1 of 12	NP_783641.1	Q2VPA4-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CR1L	ENST00000508064.7	TSL:1 MANE Select	c.5C>T	p.Ala2Val	missense	Exon 1 of 12	ENSP00000421736.2	Q2VPA4-1
	CD46P1	ENST00000441364.1	TSL:6	n.5C>T		non_coding_transcript_exon	Exon 1 of 5
	CR1L	ENST00000531844.5	TSL:2	n.126C>T		non_coding_transcript_exon	Exon 1 of 4

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152252 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: 0.000385

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000120 AC: 3 AN: 250780 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000163

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1460642 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 726620

African (AFR) AF: 0.00 AC: 0 AN: 33438

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.0000756 AC: 3 AN: 39696

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86208

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53292

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4938

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111934

Other (OTH) AF: 0.0000498 AC: 3 AN: 60282

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152370 Hom.: 0 Cov.: 32 AF XY: 0.0000268 AC XY: 2 AN XY: 74510

African (AFR) AF: 0.00 AC: 0 AN: 41594

American (AMR) AF: 0.00 AC: 0 AN: 15310

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.000386 AC: 2 AN: 5180

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68040

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000165 AC: 2

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Benign	-0.40	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	7.2
DANN	Benign	0.97
DEOGEN2	Benign	0.0072	T
Eigen	Benign	-0.82
Eigen_PC	Benign	-0.99
FATHMM_MKL	Benign	0.10	N
LIST_S2	Benign	0.39	T
M_CAP	Benign	0.0022	T
MetaRNN	Benign	0.046	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.8	L
PhyloP100		-0.88
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.63	N
REVEL	Benign	0.031
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.11	T
Polyphen		0.47	P
Vest4		0.23
MutPred		0.16		Loss of loop (P = 0.1258)
MVP		0.030
MPC		0.14
ClinPred		0.091	T
GERP RS		-0.24
PromoterAI		-0.18	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.062
gMVP		0.64
Mutation Taster		=98/2	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs553933937; hg19: chr1-207818583;