FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Human Disease Model Report: nephrotic syndrome, type 12
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General Information
Name
nephrotic syndrome, type 12
FlyBase ID
FBhh0001483
Disease Ontology Term
Parent Disease
Overview

This report describes nephrotic syndrome, type 12, a subtype of nephrotic syndrome that exhibits autosomal recessive inheritance. The human gene implicated is NUP93, which encodes a critical component of the nuclear pore complex. There are two high-scoring fly orthologs, Dmel\Nup93-1 and Dmel\Nup93-2, for which classical alleles, RNAi-targeting constructs, and alleles caused by insertional mutagenesis have been generated.

The human NUP93 gene has not been introduced into flies.

RNAi knockdown of either Dmel\Nup93-1 or Dmel\Nup93-2 in developing nephrocytes results in a significant reduction in the number of pericardial nephrocytes in adult flies, with surviving nephrocytes exhibiting an abnormal morphology.

[updated Nov. 2022 by FlyBase; FBrf0222196]

Disease Summary Information
Parent Disease Summary: nephrotic syndrome
Symptoms and phenotype

The nephrotic syndrome is characterized clinically by proteinuria, hypoalbuminemia, hyperlipidemia, and edema. Kidney biopsies show nonspecific histologic changes such as minimal change, focal segmental glomerulosclerosis (FSGS), and diffuse mesangial proliferation. Approximately 20% of affected individuals have an inherited steroid-resistant form and progress to end-stage renal failure (summary by Fuchshuber et al., 1996, pubmed:8606597). [From MIM:256300, 2016.06.13]

Specific Disease Summary: nephrotic syndrome, type 12
OMIM report

[NEPHROTIC SYNDROME, TYPE 12; NPHS12](https://omim.org/entry/616892)

Human gene(s) implicated

[NUCLEOPORIN, 93-KD; NUP93](https://omim.org/entry/614351)

Symptoms and phenotype

Nephrotic syndrome type 12 is an autosomal recessive renal disorder caused by defects in the renal glomerular filter. Affected individuals have onset of progressive renal failure in the first years of life. Renal biopsy typically shows focal segmental glomerulosclerosis (FSGS) (summary by Braun et al., 2016; pubmed:26878725). [from MIM:616892; 2022.11.04]

Genetics

Nephrotic syndrome type 12 is caused by homozygous or compound heterozygous mutation in the NUP93 gene on chromosome 16q13. [from MIM:616892; 2022.11.04]

Cellular phenotype and pathology
Molecular information

NUP93 is a critical subunit of the 120-million-Da nuclear pore complex, which functions in active transport of molecules between the nucleus and cytoplasm (Grandi et al., 1997; pubmed:9348540). [from MIM:614351; 2022.11.04]

External links
Disease synonyms
NPHS12
paediatric onset SRNS
paediatric steroid-resistant nephrotic syndrome
pediatric onset SRNS
pediatric steroid-resistant nephrotic syndrome
SRNS
Ortholog Information
Human gene(s) in FlyBase
    Human gene (HGNC)
    D. melanogaster ortholog (based on DIOPT)
    Comments on ortholog(s)

    One to two (1 human to 2 Drosophila); there are two high-scoring Drosophila orthologs of human NUP93.

    Other mammalian ortholog(s) used
      D. melanogaster Gene Information (2)
      Gene Snapshot
      Nucleoporin 93kD-1 (Nup93-1) encodes a protein that directly interacts with the product of Nup154. However, the product of Nup93-1 is not necessary for the Nup154-dependent organization of the inner nuclear membrane proteins at the nuclear envelope. [Date last reviewed: 2019-03-14]
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human NUP93 (2 Drosophila to 1 human); both Nup93-1 and Nup93-2 are high-scoring orthologs of human NUP93.

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Gene Groups / Pathways
      Comments on ortholog(s)

      High-scoring ortholog of human NUP93 (2 Drosophila to 1 human); both Nup93-2 and Nup93-1 are high-scoring orthologs of human NUP93.

      Orthologs and Alignments from DRSC
      DIOPT - DRSC Integrative Ortholog Prediction Tool - Click the link below to search for orthologs in Humans
      Other Genes Used: Viral, Bacterial, Synthetic (0)
        Summary of Physical Interactions (12 groups)
        protein-protein
        Interacting group
        Assay
        References
        pull down, anti tag western blot
        anti bait coimmunoprecipitation, western blot
        pull down, anti tag western blot
        proximity-dependent biotin identification, Identification by mass spectrometry
        proximity-dependent biotin identification, Identification by mass spectrometry
        pull down, western blot, autoradiography
        anti bait coimmunoprecipitation, western blot
        anti bait coimmunoprecipitation, western blot
        protein-protein
        Interacting group
        Assay
        References
        anti bait coimmunoprecipitation, western blot
        anti bait coimmunoprecipitation, western blot
        anti bait coimmunoprecipitation, western blot
        Alleles Reported to Model Human Disease (Disease Ontology) (3 alleles)
        Models Based on Experimental Evidence ( 1 )
        Allele
        Disease
        Evidence
        References
        Modifiers Based on Experimental Evidence ( 1 )
        Models Based on Experimental Evidence ( 1 )
        Allele
        Disease
        Evidence
        References
        Modifiers Based on Experimental Evidence ( 0 )
        Allele
        Disease
        Interaction
        References
        Alleles Representing Disease-Implicated Variants
        Genetic Tools, Stocks and Reagents
        Sources of Stocks
        Contact lab of origin for a reagent not available from a public stock center.
        Bloomington Stock Center Disease Page
        Related mammalian, viral, bacterial, or synthetic transgenes
        Allele
        Transgene
        Publicly Available Stocks
        Selected Drosophila transgenes
        Allele
        Transgene
        Publicly Available Stocks
        RNAi constructs available
        Allele
        Transgene
        Publicly Available Stocks
        Selected Drosophila classical alleles
        Allele
        Allele class
        Mutagen
        Publicly Available Stocks
        References (4)