chr14-34712985-G-GA

Variant names:

• chr14-34712985-G-GA
• rs1555333750
• NM_138638.5:c.389-9dupT

Variant summary

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

The NM_021914.8(CFL2):​c.389-9dupT variant causes a intron change involving the alteration of a non-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: CFL2 NM_021914.8 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.163
• Publications: 0 publications found

Genes affected

CFL2 (HGNC:1875): (cofilin 2) This gene encodes an intracellular protein that is involved in the regulation of actin-filament dynamics. This protein is a major component of intranuclear and cytoplasmic actin rods. It can bind G- and F-actin in a 1:1 ratio of cofilin to actin, and it reversibly controls actin polymerization and depolymerization in a pH-dependent manner. Mutations in this gene cause nemaline myopathy type 7, a form of congenital myopathy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2009]

CFL2 Gene-Disease associations (from GenCC):

• nemaline myopathy 7

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, ClinGen
• typical nemaline myopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

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_021914.8. 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
	CFL2	NM_138638.5	MANE Select	c.389-9dupT		intron	N/A	NP_619579.1
	CFL2	NM_021914.8		c.389-9dupT		intron	N/A	NP_068733.1
	CFL2	NM_001243645.2		c.338-9dupT		intron	N/A	NP_001230574.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CFL2	ENST00000298159.11	TSL:1 MANE Select	c.389-9_389-8insT		intron	N/A	ENSP00000298159.6
	CFL2	ENST00000341223.8	TSL:1	c.389-9_389-8insT		intron	N/A	ENSP00000340635.3
	CFL2	ENST00000554470.5	TSL:1	n.*69-9_*69-8insT		intron	N/A	ENSP00000450862.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 26

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.16

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: rs1555333750; hg19: chr14-35182191; COSMIC: COSV53311566;