CALM3 p.Asn61Asn

Variant names:

• chr19-46608483-G-G
• ENST00000291295.14:c.

Your query was ambiguous. Multiple possible variants found:

• chr19-46608484--
• chr19-46608486-C-T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PVS1_Strong PM2

The ENST00000291295.14(CALM3):​c. variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CALM3 ENST00000291295.14 splice_donor, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.51
• Publications: 0 publications found

Genes affected

CALM3 (HGNC:1449): (calmodulin 3) This gene encodes a member of a family of proteins that binds calcium and functions as a enzymatic co-factor. Activity of this protein is important in the regulation of the cell cycle and cytokinesis. Multiple alternatively spliced transcript variants have been observed at this gene. [provided by RefSeq, Aug 2016]

CALM3 Gene-Disease associations (from GenCC):

• familial long QT syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
• long QT syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• long QT syndrome 16

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
• catecholaminergic polymorphic ventricular tachycardia

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen, G2P

LOC124904729 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.23777778 fraction of the gene. Cryptic splice site detected, with MaxEntScore 9.5, offset of 0 (no position change), new splice context is: atcctttccccaccttccAGgga. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000291295.14. 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
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CALM3	ENST00000291295.14	TSL:1 MANE Select	c.		splice_donor intron	N/A	ENSP00000291295.8	P0DP25
	CALM3	ENST00000599839.5	TSL:1	c.		splice_donor intron	N/A	ENSP00000471225.1	Q96HY3
	CALM3	ENST00000866718.1		c.		splice_donor intron	N/A	ENSP00000536777.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.5

Splicing

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

hg19: chr19-47111740;