rs2808631

Positions:

• chr1-159712246-T-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The variant allele was found at a frequency of 0.0277 in 152,268 control chromosomes in the GnomAD database, including 175 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.028 (175 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: intergenic_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.114

Genes affected

(HGNC:):

CRP (HGNC:2367): (C-reactive protein) The protein encoded by this gene belongs to the pentraxin family which also includes serum amyloid P component protein and pentraxin 3. Pentraxins are involved in complement activation and amplification via communication with complement initiation pattern recognition molecules, but also complement regulation via recruitment of complement regulators. The encoded protein has a calcium dependent ligand binding domain with a distinctive flattened beta-jellyroll structure. It exists in two forms as either a pentamer in circulation or as a nonsoluble monomer in tissues. It is involved in several host defense related functions based on its ability to recognize foreign pathogens and damaged cells of the host and to initiate their elimination by interacting with humoral and cellular effector systems in the blood. Consequently, the level of this protein in plasma increases greatly during acute phase response to tissue injury, infection, or other inflammatory stimuli. Elevated expression of the encoded protein is associated with severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) infection. [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0905 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CRP	NM_000567.3	c.*1279A>G		downstream_gene_variant		ENST00000255030.9	NP_000558.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CRP	ENST00000255030.9	c.*1279A>G		downstream_gene_variant		1	NM_000567.3	ENSP00000255030.5
CRP	ENST00000437342.1	c.*571A>G		downstream_gene_variant		1		ENSP00000402788.1
CRP	ENST00000473196.1	n.*45A>G		downstream_gene_variant		2

Frequencies

GnomAD3 genomes AF: 0.0277 AC: 4209 AN: 152150 Hom.: 174 Cov.: 32

Gnomad AFR AF: 0.0929

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0128

Gnomad ASJ AF: 0.0109

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00290

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.000750

Gnomad OTH AF: 0.0263

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 46 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 32

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

GnomAD4 genome AF: 0.0277 AC: 4220 AN: 152268 Hom.: 175 Cov.: 32 AF XY: 0.0266 AC XY: 1980 AN XY: 74470

Gnomad4 AFR AF: 0.0929

Gnomad4 AMR AF: 0.0128

Gnomad4 ASJ AF: 0.0109

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00290

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000750

Gnomad4 OTH AF: 0.0260

Alfa AF: 0.0207 Hom.: 15

Bravo AF: 0.0317

Asia WGS AF: 0.00375 AC: 13 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	4.4
DANN	Benign	0.74

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs2808631; hg19: chr1-159682036;