8-22161802-AGAG-A
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Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_001317778.2(SFTPC):c.-23_-21del variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,613,886 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000016 ( 0 hom. )
Consequence
SFTPC
NM_001317778.2 5_prime_UTR
NM_001317778.2 5_prime_UTR
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 0.668
Genes affected
SFTPC (HGNC:10802): (surfactant protein C) This gene encodes the pulmonary-associated surfactant protein C (SPC), an extremely hydrophobic surfactant protein essential for lung function and homeostasis after birth. Pulmonary surfactant is a surface-active lipoprotein complex composed of 90% lipids and 10% proteins which include plasma proteins and apolipoproteins SPA, SPB, SPC and SPD. The surfactant is secreted by the alveolar cells of the lung and maintains the stability of pulmonary tissue by reducing the surface tension of fluids that coat the lung. Multiple mutations in this gene have been identified, which cause pulmonary surfactant metabolism dysfunction type 2, also called pulmonary alveolar proteinosis due to surfactant protein C deficiency, and are associated with interstitial lung disease in older infants, children, and adults. Alternatively spliced transcript variants encoding different protein isoforms have been identified.[provided by RefSeq, Feb 2010]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -4 ACMG points.
BS2
High AC in GnomAdExome4 at 23 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
SFTPC | NM_001317778.2 | c.-23_-21del | 5_prime_UTR_variant | 1/6 | ENST00000679463.1 | NP_001304707.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
SFTPC | ENST00000679463.1 | c.-23_-21del | 5_prime_UTR_variant | 1/6 | NM_001317778.2 | ENSP00000505152 | A1 |
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152128Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000200 AC: 5AN: 249408Hom.: 0 AF XY: 0.00000739 AC XY: 1AN XY: 135334
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GnomAD4 exome AF: 0.0000157 AC: 23AN: 1461758Hom.: 0 AF XY: 0.0000151 AC XY: 11AN XY: 727170
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GnomAD4 genome AF: 0.0000197 AC: 3AN: 152128Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74314
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Interstitial lung disease 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Pulmonary Surfactant Metabolism Dysfunction, Dominant Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Computational scores
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at