chr17-44967823-C-T

Position:

chr17-44967823-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_006688.5(C1QL1):c.226G>A(p.Gly76Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000136 in 1,392,202 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

C1QL1
NM_006688.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.77

Variant links:

Genes affected

C1QL1 (HGNC:24182): (complement C1q like 1) Predicted to enable signaling receptor binding activity. Predicted to act upstream of or within maintenance of synapse structure; motor learning; and neuron remodeling. Predicted to be located in several cellular components, including climbing fiber; presynapse; and synaptic cleft. Predicted to be part of collagen trimer. [provided by Alliance of Genome Resources, Apr 2022]

C1QL1 links:

NMT1 (HGNC:7857): (N-myristoyltransferase 1) Myristate, a rare 14-carbon saturated fatty acid, is cotranslationally attached by an amide linkage to the N-terminal glycine residue of cellular and viral proteins with diverse functions. N-myristoyltransferase (NMT; EC 2.3.1.97) catalyzes the transfer of myristate from CoA to proteins. N-myristoylation appears to be irreversible and is required for full expression of the biologic activities of several N-myristoylated proteins, including the alpha subunit of the signal-transducing guanine nucleotide-binding protein (G protein) GO (GNAO1; MIM 139311) (Duronio et al., 1992 [PubMed 1570339]).[supplied by OMIM, Nov 2008]

NMT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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, 0.957

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
C1QL1	NM_006688.5 linkuse as main transcript	c.226G>A	p.Gly76Ser	missense_variant	1/2	ENST00000253407.4	NP_006679.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
C1QL1	ENST00000253407.4 linkuse as main transcript	c.226G>A	p.Gly76Ser	missense_variant	1/2	1	NM_006688.5	ENSP00000253407	P1
NMT1	ENST00000678938.1 linkuse as main transcript	c.-110+9761C>T		intron_variant				ENSP00000503621		P30419-2

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151754

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000870

AC:

AN:

11496

Hom.:

AF XY:

0.000152

AC XY:

AN XY:

6582

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000164

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1240448

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

605358

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000879

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000123

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000884

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151754

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74112

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 15, 2023

The c.226G>A (p.G76S) alteration is located in exon 1 (coding exon 1) of the C1QL1 gene. This alteration results from a G to A substitution at nucleotide position 226, causing the glycine (G) at amino acid position 76 to be replaced by a serine (S). 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

0.61

BayesDel_addAF

Benign

-0.0091

BayesDel_noAF

Uncertain

0.010

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.89

Eigen

Pathogenic

0.77

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.98

M_CAP

Pathogenic

0.98

MetaRNN

Pathogenic

0.96

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.0

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.90

PROVEAN

Uncertain

-2.6

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0040

Sift4G

Uncertain

0.0090

Polyphen

1.0

Vest4

0.45

MutPred

0.88

Gain of phosphorylation at G76 (P = 0.0019);

MVP

0.95

ClinPred

0.58

GERP RS

4.0

Varity_R

0.55

gMVP

0.76

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over