dbSNP rs28929488: SERPINA6:p.Asp389His (chr14-94304471-C-G) – ACMG Classification: Likely_pathogenic (8 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2PM5PP3_Strong

The NM_001756.4(SERPINA6):c.1165G>C(p.Asp389His) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,892 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. D389N) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SERPINA6
NM_001756.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.96

Publications

17 publications found

Variant links:

Genes affected

SERPINA6 (HGNC:1540): (serpin family A member 6) This gene encodes an alpha-globulin protein with corticosteroid-binding properties. This is the major transport protein for glucorticoids and progestins in the blood of most vertebrates. The gene localizes to a chromosomal region containing several closely related serine protease inhibitors which may have evolved by duplication events. [provided by RefSeq, Jul 2008]

SERPINA6 Gene-Disease associations (from GenCC):

corticosteroid-binding globulin deficiency
Inheritance: SD, Unknown, AD, AR Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

SERPINA6 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr14-94304471-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 16975.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.963

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SERPINA6	NM_001756.4 link	c.1165G>C	p.Asp389His	missense_variant	Exon 5 of 5	ENST00000341584.4	NP_001747.3
SERPINA6	XM_047431827.1 link	c.1336G>C	p.Asp446His	missense_variant	Exon 5 of 5		XP_047287783.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
SERPINA6	ENST00000341584.4 link	c.1165G>C	p.Asp389His	missense_variant	Exon 5 of 5	1	NM_001756.4	ENSP00000342850.3
SERPINA6	ENST00000555056.1 link	n.*477G>C		non_coding_transcript_exon_variant	Exon 5 of 5	2		ENSP00000451045.1
SERPINA6	ENST00000555056.1 link	n.*477G>C		3_prime_UTR_variant	Exon 5 of 5	2		ENSP00000451045.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461892

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727248

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:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112010

Other (OTH)

AF:

0.00

AC:

AN:

60396

⚠️ 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: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Uncertain

0.071

BayesDel_noAF

Benign

-0.14

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.66

Eigen

Benign

-0.017

Eigen_PC

Benign

-0.11

FATHMM_MKL

Pathogenic

0.98

M_CAP

Uncertain

0.13

MetaRNN

Pathogenic

0.96

MetaSVM

Uncertain

0.33

MutationAssessor

Benign

1.1

PhyloP100

4.0

PrimateAI

Uncertain

0.49

PROVEAN

Pathogenic

-4.8

REVEL

Uncertain

0.64

Sift

Benign

0.22

Sift4G

Benign

0.11

Polyphen

0.96

Vest4

0.74

MutPred

0.77

Loss of stability (P = 0.1609);

MVP

0.93

MPC

0.54

ClinPred

0.98

GERP RS

3.9

Varity_R

0.81

gMVP

0.74

Mutation Taster

=53/47

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over