2-232633949-C-G

Position:

• chr2-232633949-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The ENST00000264059.8(EFHD1):​c.245C>G​(p.Thr82Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000692 in 1,445,314 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T82M) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: EFHD1 ENST00000264059.8 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.80

Genes affected

EFHD1 (HGNC:29556): (EF-hand domain family member D1) This gene encodes a member of the EF-hand super family of calcium binding proteins, which are involved in a variety of cellular processes including mitosis, synaptic transmission, and cytoskeletal rearrangement. The protein encoded by this gene is composed of an N-terminal disordered region, proline-rich elements, two EF-hands, and a C-terminal coiled-coil domain. This protein has been shown to associate with the mitochondrial inner membrane, and in HeLa cells, acts as a novel mitochondrial calcium ion sensor for mitochondrial flash activation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EFHD1	NM_025202.4	c.245C>G	p.Thr82Arg	missense_variant	1/4	ENST00000264059.8	NP_079478.1
EFHD1	NM_001308395.2	c.-171C>G		5_prime_UTR_variant	1/5		NP_001295324.1
EFHD1	NM_001243252.2	c.14+27776C>G		intron_variant			NP_001230181.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EFHD1	ENST00000264059.8	c.245C>G	p.Thr82Arg	missense_variant	1/4	1	NM_025202.4	ENSP00000264059	P1
EFHD1	ENST00000409613.5	c.14+27776C>G		intron_variant		1		ENSP00000386556
EFHD1	ENST00000442845.1	c.236C>G	p.Thr79Arg	missense_variant, NMD_transcript_variant	1/5	3		ENSP00000395119

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.92e-7 AC: 1 AN: 1445314 Hom.: 0 Cov.: 33 AF XY: 0.00000139 AC XY: 1 AN XY: 719530

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.030
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.18	T
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.97	D
M_CAP	Pathogenic	0.91	D
MetaRNN	Uncertain	0.67	D
MetaSVM	Uncertain	0.49	D
MutationAssessor	Uncertain	2.2	M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.78	T
PROVEAN	Pathogenic	-4.4	D
REVEL	Uncertain	0.57
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0040	D
Polyphen		0.98	D
Vest4		0.46
MutPred		0.33		Gain of disorder (P = 0.0223);
MVP		0.81
MPC		0.30
ClinPred		1.0	D
GERP RS		2.6
Varity_R		0.70
gMVP		0.89

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

Publications

LitVar

Other links and lift over

dbSNP: rs370357320; hg19: chr2-233498659;