16-89645957-G-A
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Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_002768.5(CHMP1A):c.*109C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000175 in 1,611,016 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.00020 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00017 ( 0 hom. )
Consequence
CHMP1A
NM_002768.5 3_prime_UTR
NM_002768.5 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: 0.0280
Genes affected
CHMP1A (HGNC:8740): (charged multivesicular body protein 1A) This gene encodes a member of the CHMP/Chmp family of proteins which are involved in multivesicular body sorting of proteins to the interiors of lysosomes. The initial prediction of the protein sequence encoded by this gene suggested that the encoded protein was a metallopeptidase. The nomenclature has been updated recently to reflect the correct biological function of this encoded protein. Several transcripts encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.79).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
CHMP1A | NM_002768.5 | c.*109C>T | 3_prime_UTR_variant | 7/7 | ENST00000397901.8 | NP_002759.2 | ||
CHMP1A | NM_001083314.4 | c.680C>T | p.Ala227Val | missense_variant | 6/6 | NP_001076783.1 | ||
CHMP1A | XM_047434195.1 | c.*109C>T | 3_prime_UTR_variant | 7/7 | XP_047290151.1 | |||
CHMP1A | NR_046418.3 | n.988C>T | non_coding_transcript_exon_variant | 7/7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
CHMP1A | ENST00000397901.8 | c.*109C>T | 3_prime_UTR_variant | 7/7 | 1 | NM_002768.5 | ENSP00000380998 | P1 |
Frequencies
GnomAD3 genomes AF: 0.000210 AC: 32AN: 152248Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.000115 AC: 28AN: 242852Hom.: 0 AF XY: 0.0000978 AC XY: 13AN XY: 132886
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GnomAD4 exome AF: 0.000172 AC: 251AN: 1458650Hom.: 0 Cov.: 31 AF XY: 0.000165 AC XY: 120AN XY: 725612
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GnomAD4 genome AF: 0.000203 AC: 31AN: 152366Hom.: 0 Cov.: 33 AF XY: 0.000148 AC XY: 11AN XY: 74500
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 13, 2021 | The c.680C>T (p.A227V) alteration is located in exon 6 (coding exon 6) of the CHMP1A gene. This alteration results from a C to T substitution at nucleotide position 680, causing the alanine (A) at amino acid position 227 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at