Genetic Variant CSH1:p.Asp135His (chr17-63895526-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_001317.6(CSH1):c.403G>C(p.Asp135His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,376 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign 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. D135N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 28)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CSH1
NM_001317.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.23

Publications

0 publications found

Variant links:

Genes affected

CSH1 (HGNC:2440): (chorionic somatomammotropin hormone 1) The protein encoded by this gene is a member of the somatotropin/prolactin family of hormones and plays an important role in growth control. The gene is located at the growth hormone locus on chromosome 17 along with four other related genes in the same transcriptional orientation; an arrangement which is thought to have evolved by a series of gene duplications. Although the five genes share a remarkably high degree of sequence identity, they are expressed selectively in different tissues. Alternative splicing generates additional isoforms of each of the five growth hormones, leading to further diversity and potential for specialization. This particular family member is expressed mainly in the placenta and utilizes multiple transcription initiation sites. Expression of the identical mature proteins for chorionic somatomammotropin hormones 1 and 2 is upregulated during development, although the ratio of 1 to 2 increases by term. Mutations in this gene result in placental lactogen deficiency and Silver-Russell syndrome. [provided by RefSeq, Jul 2008]

CSH1 links:

ENSG00000303015 (HGNC:):

ENSG00000303015 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=0.15319654).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001317.6. 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
	CSH1	NM_001317.6	MANE Select	c.403G>C	p.Asp135His	missense	Exon 4 of 5	NP_001308.1	P0DML2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CSH1	ENST00000316193.13	TSL:1 MANE Select	c.403G>C	p.Asp135His	missense	Exon 4 of 5	ENSP00000316416.8	P0DML2
CSH1	ENST00000329882.8	TSL:2	c.403G>C	p.Asp135His	missense	Exon 4 of 4	ENSP00000333268.8	A6NFB4
CSH1	ENST00000610991.1	TSL:5	c.136G>C	p.Asp46His	missense	Exon 3 of 4	ENSP00000478652.1	A0A087WUG6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000797

AC:

AN:

251034

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461376

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726996

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33300

American (AMR)

AF:

0.00

AC:

AN:

44698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111744

Other (OTH)

AF:

0.00

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.31

CADD

Benign

1.3

(source)

DANN

Benign

0.12

DEOGEN2

Uncertain

0.60

Eigen

Benign

-0.91

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.17

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.0053

MetaRNN

Benign

0.15

MetaSVM

Uncertain

-0.048

MutationAssessor

Benign

1.6

PhyloP100

1.2

PrimateAI

Benign

0.48

PROVEAN

Benign

-0.92

REVEL

Benign

0.23

Sift

Benign

0.44

Sift4G

Uncertain

0.0080

Polyphen

0.39

Vest4

0.23

MutPred

0.42

Loss of stability (P = 0.0322)

MVP

0.36

MPC

1.3

ClinPred

0.10

GERP RS

-0.44

Varity_R

0.14

gMVP

0.25

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over