NM_033035.5:c.203C>G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_033035.5(TSLP):c.203C>G(p.Ser68Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TSLP
NM_033035.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.12

Publications

0 publications found

Variant links:

Genes affected

TSLP (HGNC:30743): (thymic stromal lymphopoietin) This gene encodes a hemopoietic cytokine proposed to signal through a heterodimeric receptor complex composed of the thymic stromal lymphopoietin receptor and the IL-7R alpha chain. It mainly impacts myeloid cells and induces the release of T cell-attracting chemokines from monocytes and enhances the maturation of CD11c(+) dendritic cells. The protein promotes T helper type 2 (TH2) cell responses that are associated with immunity in various inflammatory diseases, including asthma, allergic inflammation and chronic obstructive pulmonary disease. The protein is therefore considered a potential therapeutic target for the treatment of such diseases. In addition, the shorter (predominant) isoform is an antimicrobial protein, displaying antibacterial and antifungal activity against B. cereus, E. coli, E. faecalis, S. mitis, S. epidermidis, and C. albicans. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2020]

TSLP links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1838001).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TSLP	NM_033035.5 link	c.203C>G	p.Ser68Cys	missense_variant	Exon 2 of 4	ENST00000344895.4	NP_149024.1	Q969D9-1
TSLP	XM_047417846.1 link	c.173C>G	p.Ser58Cys	missense_variant	Exon 3 of 5		XP_047273802.1
TSLP	XM_047417847.1 link	c.41C>G	p.Ser14Cys	missense_variant	Exon 3 of 5		XP_047273803.1
TSLP	NR_045089.2 link	n.1625C>G		non_coding_transcript_exon_variant	Exon 3 of 5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TSLP	ENST00000344895.4 link	c.203C>G	p.Ser68Cys	missense_variant	Exon 2 of 4	1	NM_033035.5	ENSP00000339804.3		Q969D9-1
TSLP	ENST00000420978.6 link	c.203C>G	p.Ser68Cys	missense_variant	Exon 3 of 5	1		ENSP00000399099.2		A0A0C4DG43

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727246

show subpopulations

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:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 14, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.203C>G (p.S68C) alteration is located in exon 2 (coding exon 2) of the TSLP gene. This alteration results from a C to G substitution at nucleotide position 203, causing the serine (S) at amino acid position 68 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.59

CADD

Benign

0.34

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.14

.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.025

LIST_S2

Benign

0.38

T;T

M_CAP

Benign

0.0058

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.34

.;N

PhyloP100

-2.1

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.7

N;N

REVEL

Benign

0.22

Sift

Benign

0.18

T;T

Sift4G

Benign

0.18

T;T

Polyphen

0.98

.;D

Vest4

0.23

MutPred

0.29

Loss of disorder (P = 0.0167);Loss of disorder (P = 0.0167);

MVP

0.014

MPC

0.48

ClinPred

0.82

GERP RS

-8.1

PromoterAI

0.044

Neutral

(source)

Varity_R

0.13

gMVP

0.11

Mutation Taster

=100/0

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over