rs34270473

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_032861.4(SERAC1):c.89T>C(p.Ile30Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00179 in 1,596,892 control chromosomes in the GnomAD database, including 49 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0096 ( 26 hom., cov: 32)

Exomes 𝑓: 0.00097 ( 23 hom. )

Consequence

SERAC1
NM_032861.4 missense, splice_region

Scores

Splicing: ADA: 0.00004254

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 3.58

Publications

2 publications found

Variant links:

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, G2P, Orphanet, Labcorp Genetics (formerly Invitae)
Leigh syndrome
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

SERAC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004340023).

BP6

Variant 6-158158275-A-G is Benign according to our data. Variant chr6-158158275-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 139091.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00963 (1466/152284) while in subpopulation AFR AF = 0.0329 (1366/41536). AF 95% confidence interval is 0.0314. There are 26 homozygotes in GnomAd4. There are 690 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 26 AR gene

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SERAC1	NM_032861.4	MANE Select	c.89T>C	p.Ile30Thr	missense splice_region	Exon 2 of 17	NP_116250.3
	SERAC1	NR_073096.2		n.213T>C		splice_region non_coding_transcript_exon	Exon 2 of 13

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SERAC1	ENST00000647468.2	MANE Select	c.89T>C	p.Ile30Thr	missense splice_region	Exon 2 of 17	ENSP00000496731.1
SERAC1	ENST00000606965.5	TSL:1	n.89T>C		splice_region non_coding_transcript_exon	Exon 2 of 13	ENSP00000475808.1
SERAC1	ENST00000607742.5	TSL:1	n.89T>C		splice_region non_coding_transcript_exon	Exon 2 of 15	ENSP00000475523.1

Frequencies

GnomAD3 genomes

AF:

0.00959

AC:

1459

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0328

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00955

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00908

GnomAD2 exomes

AF:

0.00245

AC:

616

AN:

251006

AF XY:

0.00173

show subpopulations

Gnomad AFR exome

AF:

0.0324

Gnomad AMR exome

AF:

0.00183

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.00163

GnomAD4 exome

AF:

0.000969

AC:

1400

AN:

1444608

Hom.:

Cov.:

AF XY:

0.000838

AC XY:

603

AN XY:

719758

show subpopulations

African (AFR)

AF:

0.0323

AC:

1069

AN:

33088

American (AMR)

AF:

0.00226

AC:

101

AN:

44636

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26002

East Asian (EAS)

AF:

0.00

AC:

AN:

39588

South Asian (SAS)

AF:

0.0000815

AC:

AN:

85856

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.00262

AC:

AN:

5726

European-Non Finnish (NFE)

AF:

0.0000775

AC:

AN:

1096540

Other (OTH)

AF:

0.00204

AC:

122

AN:

59794

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

118

177

236

295

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

126

168

210

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00963

AC:

1466

AN:

152284

Hom.:

Cov.:

AF XY:

0.00926

AC XY:

690

AN XY:

74476

show subpopulations

African (AFR)

AF:

0.0329

AC:

1366

AN:

41536

American (AMR)

AF:

0.00457

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.000207

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00685

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000118

AC:

AN:

68022

Other (OTH)

AF:

0.00899

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

147

220

294

367

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00369

Hom.:

Bravo

AF:

0.0108

ESP6500AA

AF:

0.0318

AC:

140

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00306

AC:

371

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Oct 11, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

Feb 29, 2016

Mayo Clinic Laboratories, Mayo Clinic

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

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

Benign:2

Mar 15, 2022

Genome-Nilou Lab

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Benign:1

Feb 09, 2014

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.016

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.34

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.82

MetaRNN

Benign

0.0043

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.4

PhyloP100

3.6

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-0.85

REVEL

Benign

0.14

Sift

Uncertain

0.023

Sift4G

Benign

0.083

Polyphen

0.059

Vest4

0.83

MVP

0.37

MPC

0.36

ClinPred

0.022

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.096

gMVP

0.62

Mutation Taster

=63/37

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000043

dbscSNV1_RF

Benign

0.0060

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over