X-106033560-C-A

Position:

chrX-106033560-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000354.6(SERPINA7):c.1188G>T(p.Leu396Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000165 in 1,209,222 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 9.1e-7 ( 0 hom. 1 hem. )

Consequence

SERPINA7
NM_000354.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0430

Variant links:

Genes affected

SERPINA7 (HGNC:11583): (serpin family A member 7) There are three proteins including thyroxine-binding globulin (TBG), transthyretin and albumin responsible for carrying the thyroid hormones thyroxine (T4) and 3,5,3'-triiodothyronine (T3) in the bloodstream. This gene encodes the major thyroid hormone transport protein, TBG, in serum. It belongs to the serpin family in genomics, but the protein has no inhibitory function like many other members of the serpin family. Mutations in this gene result in TGB deficiency, which has been classified as partial deficiency, complete deficiency, and excess, based on the level of serum TBG. Alternatively spliced transcript variants encoding different isoforms have been found, but the full-length nature of these variants has not been determined.[provided by RefSeq, Jun 2012]

SERPINA7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13770723).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SERPINA7	NM_000354.6 linkuse as main transcript	c.1188G>T	p.Leu396Phe	missense_variant	5/5	ENST00000372563.2
SERPINA7	XM_006724683.3 linkuse as main transcript	c.1218G>T	p.Leu406Phe	missense_variant	5/5
SERPINA7	XM_005262180.5 linkuse as main transcript	c.*133G>T		3_prime_UTR_variant	5/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SERPINA7	ENST00000372563.2 linkuse as main transcript	c.1188G>T	p.Leu396Phe	missense_variant	5/5	5	NM_000354.6	P1
SERPINA7	ENST00000327674.8 linkuse as main transcript	c.1188G>T	p.Leu396Phe	missense_variant	4/4	1		P1

Frequencies

GnomAD3 genomes

AF:

0.00000893

AC:

AN:

112008

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34218

show subpopulations

Gnomad AFR

AF:

0.0000324

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

9.11e-7

AC:

AN:

1097214

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

362696

show subpopulations

Gnomad4 AFR exome

AF:

0.0000379

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000893

AC:

AN:

112008

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34218

show subpopulations

Gnomad4 AFR

AF:

0.0000324

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 03, 2017

The L396F variant in the SERPINA7 gene has not been reported previously as a pathogenic variant, nor as a benign variant, to our knowledge. The L396F variant was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. However, the L396F variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. This substitution occurs at a position that is not conserved, and in silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. We interpret L396F as a variant of uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.049

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.022

T;T

FATHMM_MKL

Benign

0.65

LIST_S2

Benign

0.73

.;T

M_CAP

Pathogenic

0.41

MetaRNN

Benign

0.14

T;T

MetaSVM

Benign

-0.72

MutationAssessor

Benign

0.74

N;N

MutationTaster

Benign

0.92

D;D

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.39

N;N

REVEL

Benign

0.26

Sift

Benign

0.21

T;T

Sift4G

Benign

0.60

T;T

Polyphen

0.046

B;B

Vest4

0.050

MutPred

0.44

Gain of MoRF binding (P = 0.1675);Gain of MoRF binding (P = 0.1675);

MVP

0.73

MPC

0.21

ClinPred

0.49

GERP RS

2.2

Varity_R

0.33

gMVP

0.14

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over