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GeneBe

1-22644029-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_172369.5(C1QC):​c.6C>T​(p.Asp2=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00031 in 1,591,394 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00032 ( 0 hom. )

Consequence

C1QC
NM_172369.5 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.320
Variant links:
Genes affected
C1QC (HGNC:1245): (complement C1q C chain) This gene encodes the C-chain polypeptide of serum complement subcomponent C1q, which associates with C1r and C1s to yield the first component of the serum complement system. C1q is composed of 18 polypeptide chains which include 6 A-chains, 6 B-chains, and 6 C-chains. Each chain contains an N-terminal collagen-like region and a C-terminal C1q globular domain. C1q deficiency is associated with lupus erythematosus and glomerulonephritis. [provided by RefSeq, Dec 2016]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.76).
BP6
Variant 1-22644029-C-T is Benign according to our data. Variant chr1-22644029-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1544198.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=-0.32 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
C1QCNM_172369.5 linkuse as main transcriptc.6C>T p.Asp2= synonymous_variant 2/3 ENST00000374640.9
C1QCNM_001114101.3 linkuse as main transcriptc.6C>T p.Asp2= synonymous_variant 2/3
C1QCNM_001347619.2 linkuse as main transcriptc.6C>T p.Asp2= synonymous_variant 2/3
C1QCNM_001347620.2 linkuse as main transcriptc.-87+315C>T intron_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
C1QCENST00000374640.9 linkuse as main transcriptc.6C>T p.Asp2= synonymous_variant 2/31 NM_172369.5 P1

Frequencies

GnomAD3 genomes
AF:
0.000184
AC:
28
AN:
152018
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000121
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000327
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:
0.000250
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.0000951
AC:
20
AN:
210358
Hom.:
0
AF XY:
0.0000796
AC XY:
9
AN XY:
113030
show subpopulations
Gnomad AFR exome
AF:
0.000231
Gnomad AMR exome
AF:
0.0000670
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:
0.000160
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000323
AC:
465
AN:
1439376
Hom.:
0
Cov.:
31
AF XY:
0.000310
AC XY:
221
AN XY:
713538
show subpopulations
Gnomad4 AFR exome
AF:
0.0000900
Gnomad4 AMR exome
AF:
0.0000488
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000404
Gnomad4 OTH exome
AF:
0.000252
GnomAD4 genome
AF:
0.000184
AC:
28
AN:
152018
Hom.:
0
Cov.:
32
AF XY:
0.000175
AC XY:
13
AN XY:
74262
show subpopulations
Gnomad4 AFR
AF:
0.000121
Gnomad4 AMR
AF:
0.000327
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000250
Gnomad4 OTH
AF:
0.000478
Alfa
AF:
0.0000988
Hom.:
0
Bravo
AF:
0.000136

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeDec 15, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.76
CADD
Benign
4.5
DANN
Benign
0.60

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

Publications

LitVar

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

Other links and lift over

dbSNP: rs148237661; hg19: chr1-22970522; API