NM_032861.4:c.1876A>G

Variant names:

• chr6-158111455-T-C
• rs200957270
• NM_032861.4:c.1876A>G

Variant summary

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

The NM_032861.4(SERAC1):​c.1876A>G​(p.Ile626Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000931 in 1,611,304 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: SERAC1 NM_032861.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.42
• Publications: 0 publications found

Genes affected

SERAC1 (HGNC:21061): (serine active site containing 1) The protein encoded by this gene is a phosphatidylglycerol remodeling protein found at the interface of mitochondria and endoplasmic reticula, where it mediates phospholipid exchange. The encoded protein plays a major role in mitochondrial function and intracellular cholesterol trafficking. Defects in this gene are a cause of 3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome (MEGDEL). Two transcript variants, one protein-coding and the other non-protein coding, have been found for this gene. [provided by RefSeq, Aug 2012]

SERAC1 Gene-Disease associations (from GenCC):

• 3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• Leigh syndrome

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

ENSG00000306953 (HGNC:):

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_032861.4. 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
	SERAC1	NM_032861.4	MANE Select	c.1876A>G	p.Ile626Val	missense	Exon 17 of 17	NP_116250.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERAC1	ENST00000647468.2	MANE Select	c.1876A>G	p.Ile626Val	missense	Exon 17 of 17	ENSP00000496731.1	Q96JX3-1
	SERAC1	ENST00000607742.5	TSL:1	n.*3154A>G		non_coding_transcript_exon	Exon 15 of 15	ENSP00000475523.1	U3KQG3
	SERAC1	ENST00000607742.5	TSL:1	n.*3154A>G		3_prime_UTR	Exon 15 of 15	ENSP00000475523.1	U3KQG3

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152202 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000405 AC: 1 AN: 247180 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000893

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000891 AC: 13 AN: 1459102 Hom.: 0 Cov.: 29 AF XY: 0.00000827 AC XY: 6 AN XY: 725836

African (AFR) AF: 0.00 AC: 0 AN: 33366

American (AMR) AF: 0.00 AC: 0 AN: 44192

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26076

East Asian (EAS) AF: 0.00 AC: 0 AN: 39654

South Asian (SAS) AF: 0.00 AC: 0 AN: 85702

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53042

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5730

European-Non Finnish (NFE) AF: 0.0000117 AC: 13 AN: 1111036

Other (OTH) AF: 0.00 AC: 0 AN: 60304

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152202 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74358

African (AFR) AF: 0.00 AC: 0 AN: 41454

American (AMR) AF: 0.00 AC: 0 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.20
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.015	T
Eigen	Uncertain	0.33
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.85	T
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.55	D
MetaSVM	Uncertain	0.38	D
MutationAssessor	Uncertain	2.2	M
PhyloP100		7.4
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-0.61	N
REVEL	Uncertain	0.60
Sift	Benign	0.10	T
Sift4G	Benign	0.17	T
Polyphen		0.93	P
Vest4		0.44
MutPred		0.52		Loss of methylation at K630 (P = 0.1352)
MVP		0.92
MPC		0.31
ClinPred		0.59	D
GERP RS		5.8
Varity_R		0.11
gMVP		0.59
Mutation Taster		=78/22	polymorphism

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: rs200957270; hg19: chr6-158532487;