Genetic Variant CYB5RL:p.Ser250Thr (chr1-54174818-C-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001031672.4(CYB5RL):c.749G>C(p.Ser250Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000558 in 1,612,610 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. 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. S250I) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

CYB5RL
NM_001031672.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.956

Publications

0 publications found

Variant links:

Genes affected

CYB5RL (HGNC:32220): (cytochrome b5 reductase like) Predicted to enable cytochrome-b5 reductase activity, acting on NAD(P)H. Predicted to be involved in bicarbonate transport. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

CYB5RL links:

ENSG00000256407 (HGNC:):

ENSG00000256407 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.011920154).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001031672.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CYB5RL	NM_001031672.4	MANE Select	c.749G>C	p.Ser250Thr	missense	Exon 8 of 8	NP_001026842.2	Q6IPT4-1
CYB5RL	NM_001353353.2		c.512G>C	p.Ser171Thr	missense	Exon 6 of 6	NP_001340282.1
CYB5RL	NM_001353354.2		c.305G>C	p.Ser102Thr	missense	Exon 7 of 7	NP_001340283.1	Q6IPT4-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CYB5RL	ENST00000534324.6	TSL:5 MANE Select	c.749G>C	p.Ser250Thr	missense	Exon 8 of 8	ENSP00000434343.1	Q6IPT4-1
CYB5RL	ENST00000420054.5	TSL:1	n.*743G>C		non_coding_transcript_exon	Exon 7 of 7	ENSP00000403021.1	F8WDU4
CYB5RL	ENST00000421415.5	TSL:1	n.*387G>C		non_coding_transcript_exon	Exon 7 of 7	ENSP00000394709.1	F8VW03

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000324

AC:

AN:

246584

AF XY:

0.0000373

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000448

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1460304

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726464

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44692

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.000176

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86188

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52186

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111814

Other (OTH)

AF:

0.00

AC:

AN:

60360

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.461

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000131

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41570

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.000386

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.52

CADD

Benign

0.34

(source)

DANN

Benign

0.58

DEOGEN2

Benign

0.032

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.032

LIST_S2

Benign

0.35

M_CAP

Benign

0.049

MetaRNN

Benign

0.012

MetaSVM

Benign

-0.32

MutationAssessor

Benign

-0.27

PhyloP100

-0.96

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.37

REVEL

Benign

0.22

Sift

Benign

0.49

Sift4G

Benign

1.0

Polyphen

0.0010

Vest4

0.14

MVP

0.18

ClinPred

0.0039

GERP RS

-1.7

Varity_R

0.068

gMVP

0.18

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over