USB1
Chr 16ARU6 snRNA biogenesis phosphodiesterase 1
Also known as: C16orf57, HVSL1, Mpn1, PN, hMpn1, hUsb1
This gene encodes a protein with several conserved domains, however, its exact function is not known. Mutations in this gene are associated with poikiloderma with neutropenia (PN), which shows phenotypic overlap with Rothmund-Thomson syndrome (RTS) caused by mutations in the RECQL4 gene. It is believed that this gene product interacts with RECQL4 protein via SMAD4 proteins, explaining the partial clinical overlap between PN and RTS. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Mar 2011]
Primary Disease Associations & Inheritance
Some data sources returned errors (1)
gnomad: TimeoutError: The operation was aborted due to timeout
Population Genetics & Constraint
Constraint data not available from gnomAD.
The highest-scoring mechanism for this gene is dominant-negative.
Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.
Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.
ClinVar Variant Classifications
0 submitted variants in ClinVar
Protein Context — Lollipop Plot
USB1 · protein map & ClinVar variants
Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.
Gene2Phenotype Curations
USB1-related poikiloderma with neutropenia
definitiveGene2Phenotype curations · DECIPHER consortium patient cohort (public variants) · deciphergenomics.org
External Resources
Links to major genomics databases and tools
Clinical Trials
Active and recruiting trials from ClinicalTrials.gov
No active trials found for this gene.
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Links to major genomics databases and tools