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GeneBe

X-106033526-TCCCTAGAAAGAGAATACTC-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PVS1_ModerateBS2

The NM_000354.6(SERPINA7):c.1203_1221del(p.Ser402LysfsTer3) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000413 in 1,209,763 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 17 hemizygotes in GnomAD. Variant has been reported in ClinVar as association (no stars).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 0 hem., cov: 22)
Exomes 𝑓: 0.000043 ( 0 hom. 17 hem. )

Consequence

SERPINA7
NM_000354.6 frameshift

Scores

Not classified

Clinical Significance

association no assertion criteria provided O:1

Conservation

PhyloP100: 8.70
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0361 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
BS2
High Hemizygotes in GnomAdExome at 2 XL gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SERPINA7NM_000354.6 linkuse as main transcriptc.1203_1221del p.Ser402LysfsTer3 frameshift_variant 5/5 ENST00000372563.2
SERPINA7XM_006724683.3 linkuse as main transcriptc.1233_1251del p.Ser412LysfsTer3 frameshift_variant 5/5
SERPINA7XM_005262180.5 linkuse as main transcriptc.*148_*166del 3_prime_UTR_variant 5/5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SERPINA7ENST00000372563.2 linkuse as main transcriptc.1203_1221del p.Ser402LysfsTer3 frameshift_variant 5/55 NM_000354.6 P1
SERPINA7ENST00000327674.8 linkuse as main transcriptc.1203_1221del p.Ser402LysfsTer3 frameshift_variant 4/41 P1

Frequencies

GnomAD3 genomes
AF:
0.0000268
AC:
3
AN:
111948
Hom.:
0
Cov.:
22
AF XY:
0.00
AC XY:
0
AN XY:
34154
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:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000564
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000109
AC:
2
AN:
182865
Hom.:
0
AF XY:
0.0000296
AC XY:
2
AN XY:
67551
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000246
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000428
AC:
47
AN:
1097815
Hom.:
0
AF XY:
0.0000468
AC XY:
17
AN XY:
363323
show subpopulations
Gnomad4 AFR exome
AF:
0.00
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:
0.0000523
Gnomad4 OTH exome
AF:
0.0000651
GnomAD4 genome
AF:
0.0000268
AC:
3
AN:
111948
Hom.:
0
Cov.:
22
AF XY:
0.00
AC XY:
0
AN XY:
34154
show subpopulations
Gnomad4 AFR
AF:
0.00
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:
0.0000564
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000227
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

Significance: association
Submissions summary: Other:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Thyroxine-binding globulin quantitative trait locus Other:1
association, no assertion criteria providedliterature onlyOMIMOct 01, 2001- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

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.

Other links and lift over

dbSNP: rs765816848; hg19: chrX-105277517; API