rs25677

Variant names:

• chr19-35341083-C-A
• rs25677
• NM_001771.4:c.1452C>A
• CD22 p.Cys484*

Your query was ambiguous. Multiple possible variants found:

• chr19-35341083-C-A
• chr19-35341083-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001771.4(CD22):​c.1452C>A​(p.Cys484*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CD22 NM_001771.4 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.819
• Publications: 5 publications found

Genes affected

CD22 (HGNC:1643): (CD22 molecule) Predicted to enable CD4 receptor binding activity; protein phosphatase binding activity; and sialic acid binding activity. Involved in B cell activation; negative regulation of B cell receptor signaling pathway; and regulation of endocytosis. Located in early endosome and recycling endosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001771.4. 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
	CD22	NM_001771.4	MANE Select	c.1452C>A	p.Cys484*	stop_gained	Exon 7 of 14	NP_001762.2	P20273-1
	CD22	NM_001185099.2		c.1188C>A	p.Cys396*	stop_gained	Exon 6 of 13	NP_001172028.1	P20273-3
	CD22	NM_001185100.2		c.1452C>A	p.Cys484*	stop_gained	Exon 7 of 13	NP_001172029.1	P20273-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CD22	ENST00000085219.10	TSL:1 MANE Select	c.1452C>A	p.Cys484*	stop_gained	Exon 7 of 14	ENSP00000085219.4	P20273-1
	CD22	ENST00000536635.6	TSL:1	c.1188C>A	p.Cys396*	stop_gained	Exon 6 of 13	ENSP00000442279.1	P20273-3
	CD22	ENST00000544992.6	TSL:1	c.1452C>A	p.Cys484*	stop_gained	Exon 7 of 13	ENSP00000441237.1	P20273-4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461892 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

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

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 31

Alfa AF: 0.00285 Hom.: 124

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.070
CADD	Uncertain	24
DANN	Uncertain	0.98
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.61
FATHMM_MKL	Benign	0.12	N
PhyloP100		-0.82
Mutation Taster		=51/149	disease causing (fs/PTC)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs25677;

hg19: chr19-35831986;