rs1325284

Variant names:

• chr1-111233170-A-G
• rs1325284
• NM_004000.3:c.330-1737A>G

Your query was ambiguous. Multiple possible variants found:

• chr1-111233170-A-G
• chr1-111233170-A-T

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Moderate BA1

The NM_004000.3(CHI3L2):​c.330-1737A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.25 in 152,052 control chromosomes in the GnomAD database, including 5,588 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 0.25 (5588 hom., cov: 32)
• Consequence: CHI3L2 NM_004000.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.32
• Publications: 4 publications found

Genes affected

CHI3L2 (HGNC:1933): (chitinase 3 like 2) The protein encoded by this gene is similar to bacterial chitinases but lacks chitinase activity. The encoded protein is secreted and is involved in cartilage biogenesis. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.44).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.335 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004000.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHI3L2	NM_004000.3	MANE Select	c.330-1737A>G		intron	N/A	NP_003991.2
	CHI3L2	NM_001025197.1		c.300-1737A>G		intron	N/A	NP_001020368.1
	CHI3L2	NM_001025199.2		c.93-1737A>G		intron	N/A	NP_001020370.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHI3L2	ENST00000369748.9	TSL:1 MANE Select	c.330-1737A>G		intron	N/A	ENSP00000358763.4
	CHI3L2	ENST00000466741.5	TSL:1	c.93-1737A>G		intron	N/A	ENSP00000437086.1
	CHI3L2	ENST00000445067.6	TSL:5	c.330-1737A>G		intron	N/A	ENSP00000437082.1

Frequencies

GnomAD3 genomes AF: 0.250 AC: 37959 AN: 151934 Hom.: 5593 Cov.: 32

Gnomad AFR AF: 0.0972

Gnomad AMI AF: 0.191

Gnomad AMR AF: 0.216

Gnomad ASJ AF: 0.346

Gnomad EAS AF: 0.199

Gnomad SAS AF: 0.236

Gnomad FIN AF: 0.321

Gnomad MID AF: 0.316

Gnomad NFE AF: 0.339

Gnomad OTH AF: 0.277

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.250 AC: 37951 AN: 152052 Hom.: 5588 Cov.: 32 AF XY: 0.246 AC XY: 18259 AN XY: 74310

African (AFR) AF: 0.0969 AC: 4023 AN: 41502

American (AMR) AF: 0.215 AC: 3291 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.346 AC: 1199 AN: 3464

East Asian (EAS) AF: 0.199 AC: 1028 AN: 5160

South Asian (SAS) AF: 0.237 AC: 1144 AN: 4822

European-Finnish (FIN) AF: 0.321 AC: 3389 AN: 10542

Middle Eastern (MID) AF: 0.299 AC: 88 AN: 294

European-Non Finnish (NFE) AF: 0.339 AC: 23035 AN: 67972

Other (OTH) AF: 0.276 AC: 581 AN: 2108

Alfa AF: 0.177 Hom.: 457

Bravo AF: 0.234

Asia WGS AF: 0.239 AC: 830 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.44
CADD	Benign	11
DANN	Benign	0.92
PhyloP100		1.3
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1325284; hg19: chr1-111775792;