4-145546736-A-C
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP2
The NM_005900.3(SMAD1):c.809A>C(p.His270Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000547 in 1,461,514 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000055 ( 0 hom. )
Consequence
SMAD1
NM_005900.3 missense
NM_005900.3 missense
Scores
6
10
2
Clinical Significance
Conservation
PhyloP100: 9.32
Genes affected
SMAD1 (HGNC:6767): (SMAD family member 1) The protein encoded by this gene belongs to the SMAD, a family of proteins similar to the gene products of the Drosophila gene 'mothers against decapentaplegic' (Mad) and the C. elegans gene Sma. SMAD proteins are signal transducers and transcriptional modulators that mediate multiple signaling pathways. This protein mediates the signals of the bone morphogenetic proteins (BMPs), which are involved in a range of biological activities including cell growth, apoptosis, morphogenesis, development and immune responses. In response to BMP ligands, this protein can be phosphorylated and activated by the BMP receptor kinase. The phosphorylated form of this protein forms a complex with SMAD4, which is important for its function in the transcription regulation. This protein is a target for SMAD-specific E3 ubiquitin ligases, such as SMURF1 and SMURF2, and undergoes ubiquitination and proteasome-mediated degradation. Alternatively spliced transcript variants encoding the same protein have been observed. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PP2
?
Missense variant where missense usually causes diseases, SMAD1
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SMAD1 | NM_005900.3 | c.809A>C | p.His270Pro | missense_variant | 5/7 | ENST00000302085.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SMAD1 | ENST00000302085.9 | c.809A>C | p.His270Pro | missense_variant | 5/7 | 1 | NM_005900.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 0.00000547 AC: 8AN: 1461514Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727078
GnomAD4 exome
AF:
AC:
8
AN:
1461514
Hom.:
Cov.:
31
AF XY:
AC XY:
2
AN XY:
727078
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Nov 29, 2023 | The c.809A>C (p.H270P) alteration is located in exon 5 (coding exon 4) of the SMAD1 gene. This alteration results from a A to C substitution at nucleotide position 809, causing the histidine (H) at amino acid position 270 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Pathogenic
D;D;D
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Uncertain
D;D;D
MetaSVM
Uncertain
D
MutationAssessor
Benign
M;M;M
MutationTaster
Benign
D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Uncertain
D;D;D
REVEL
Pathogenic
Sift
Uncertain
D;D;D
Sift4G
Uncertain
D;D;D
Polyphen
B;B;B
Vest4
MutPred
Gain of glycosylation at H270 (P = 0.057);Gain of glycosylation at H270 (P = 0.057);Gain of glycosylation at H270 (P = 0.057);
MVP
MPC
2.3
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
No publications associated with this variant yet.