Genetic Variant RETSAT:p.Asp567Ala (chr2-85343375-T-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_017750.4(RETSAT):c.1700A>C(p.Asp567Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. D567G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 36)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

RETSAT
NM_017750.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.40

Publications

1 publications found

Variant links:

Genes affected

RETSAT (HGNC:25991): (retinol saturase) Predicted to enable all-trans-retinol 13,14-reductase activity. Predicted to be involved in retinol metabolic process. Located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

RETSAT links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.866

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017750.4. 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
	RETSAT	NM_017750.4	MANE Select	c.1700A>C	p.Asp567Ala	missense	Exon 11 of 11	NP_060220.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RETSAT	ENST00000295802.9	TSL:1 MANE Select	c.1700A>C	p.Asp567Ala	missense	Exon 11 of 11	ENSP00000295802.4	Q6NUM9-1
RETSAT	ENST00000429806.5	TSL:1	n.*87A>C		non_coding_transcript_exon	Exon 8 of 8	ENSP00000388202.1	H7BZ81
RETSAT	ENST00000429806.5	TSL:1	n.*87A>C		3_prime_UTR	Exon 8 of 8	ENSP00000388202.1	H7BZ81

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000400

AC:

AN:

250104

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

6.85e-7

AC:

AN:

1460046

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726142

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33396

American (AMR)

AF:

0.0000224

AC:

AN:

44624

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26066

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86172

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5478

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110948

Other (OTH)

AF:

0.00

AC:

AN:

60266

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.27

Eigen

Benign

0.17

Eigen_PC

Benign

0.16

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.85

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.87

MetaSVM

Benign

-0.32

MutationAssessor

Pathogenic

3.1

PhyloP100

7.4

PrimateAI

Uncertain

0.66

PROVEAN

Pathogenic

-7.0

REVEL

Uncertain

0.58

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0030

Polyphen

1.0

Vest4

0.87

MutPred

0.66

Gain of catalytic residue at G565 (P = 0.1009)

MVP

0.45

MPC

0.44

ClinPred

0.99

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.83

gMVP

0.96

Mutation Taster

=46/54

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over