Gene Gene information from NCBI Gene database.
Entrez ID 55627
Gene name Sphingomyelin phosphodiesterase 4
Gene symbol SMPD4
Synonyms (NCBI Gene)
NEDMABANEDMEBANET13NSMASE-3NSMASE3SKNY
Chromosome 2
Chromosome location 2q21.1
Summary The protein encoded by this gene is a sphingomyelinase that catalyzes the hydrolysis of membrane sphingomyelin to form phosphorylcholine and ceramide. This gene is activated by DNA damage, cellular stress, and tumor necrosis factor, but it is downregulate
SNPs SNP information provided by dbSNP.
6
SNP ID Visualize variation Clinical significance Consequence
rs747433356 G>A,T Pathogenic Missense variant, non coding transcript variant, genic downstream transcript variant, coding sequence variant
rs766318490 C>T Pathogenic Genic downstream transcript variant, intron variant
rs780446128 C>A Pathogenic Splice donor variant, intron variant
rs1391542283 C>T Pathogenic Genic downstream transcript variant, splice donor variant
rs1573664291 GAGCGCG>- Pathogenic Coding sequence variant, non coding transcript variant, frameshift variant, genic downstream transcript variant
miRNA miRNA information provided by mirtarbase database.
160
miRTarBase ID miRNA Experiments Reference
MIRT022153 hsa-miR-124-3p Microarray 18668037
MIRT031423 hsa-miR-16-5p Proteomics 18668040
MIRT043289 hsa-miR-331-3p CLASH 23622248
MIRT1373853 hsa-miR-1205 CLIP-seq
MIRT1373854 hsa-miR-124 CLIP-seq
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
31
GO ID Ontology Definition Evidence Reference
GO:0000139 Component Golgi membrane IEA
GO:0004767 Function Sphingomyelin phosphodiesterase activity IEA
GO:0005634 Component Nucleus IEA
GO:0005635 Component Nuclear envelope IEA
GO:0005635 Component Nuclear envelope ISS
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
610457 32949 ENSG00000136699
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
Q9NXE4
Protein name Sphingomyelin phosphodiesterase 4 (EC 3.1.4.12) (Neutral sphingomyelinase 3) (nSMase-3) (nSMase3) (Neutral sphingomyelinase III)
Protein function Catalyzes the hydrolysis of membrane sphingomyelin to form phosphorylcholine and ceramide (PubMed:16517606, PubMed:25180167). It has a relevant role in the homeostasis of membrane sphingolipids, thereby influencing membrane integrity, and endopl
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF14724 mit_SMPDase 47 811 Mitochondrial-associated sphingomyelin phosphodiesterase Family
Tissue specificity TISSUE SPECIFICITY: Widely expressed, with highest levels in heart and skeletal muscle. {ECO:0000269|PubMed:16517606, ECO:0000269|PubMed:18505924, ECO:0000269|PubMed:25180167}.; TISSUE SPECIFICITY: [Isoform 1]: Expressed in skeletal muscle (at protein lev
Sequence
MTTFGAVAEWRLPSLRRATLWIPQWFAKKAIFNSPLEAAMAFPHLQQPSFLLASLKADSI
NKPFAQQCQDLVKVIEDFPAKELHTIFPWLVESIFGSLDGVLVGWNLRCLQGRVNPVEYS
IVMEFLDPGGPMMKLVYKLQAEDYKFDFPVSYLPGPVKASIQECILPDSPLYHNKVQFTP
TGGLGLNLALNPFEYYIFFFALSLITQKPLPVSLHVRTSDCAYFILVDRYLSWFLPTEGS
VPPPLSSSPGGTSPSPPPRTPAIPFASYGLHHTSLLKRHISHQTSVNADPASHEIWRSET
LLQVFVEMWLHHYSLEMYQKMQSPHAKLEVLHYRLSVSSALYSPAQPSLQALHAYQESFT
PTEEHVLVVRLLLKHLHAFANSLKPEQASPSAHSHATSPLEEFKRAAVPRFVQQKLYLFL
QHCFGHWPLDASFRAVLEMWLSYLQPWRYAPDKQAPGSDSQPRCVSEKWAPFVQENLLMY
TKLFVGFLNRALRTDLVSPKHALMVFRVAKVFAQPNLAEMIQKGEQLFLEPELVIPHRQH
RLFTAPTFTGSFLSPWPPAVTDASFKVKSHVYSLEGQDCKYTPMFGPEARTLVLRLAQLI
TQAKHTAKSISDQCAESPAGHSFLSWLGFSSMDTNGSYTANDLDEMGQDSVRKTDEYLEK
ALEYLRQIFRLSEAQLRQFTLALGTTQDENGKKQLPDCIVGEDGLILTPLGRYQIINGLR
RFEIEYQGDPELQPIRSYEIASLVRTLFRLSSAINHRFAGQMAALCSRDDFLGSFCRYHL
TEPGLASRHLLSPVGRRQVAGHTRGPRLSLR
FLGSYRTLVSLLLAFFVASLFCVGPLPCT
LLLTLGYVLYASAMTLLTERGKLHQP
Sequence length 866
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Sphingolipid metabolism
Metabolic pathways
  Glycosphingolipid metabolism
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
4
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Hepatocellular carcinoma Pathogenic rs780446128 RCV005906937
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Neurodevelopmental disorder with microcephaly, arthrogryposis, and structural brain anomalies Likely pathogenic; Pathogenic rs781077687, rs1169024524, rs2104871303, rs773722168, rs2467143206, rs2467146771, rs1302471394, rs2467253753, rs2467139048, rs2467301101, rs2467152962, rs534879577, rs766318490, rs1391542283, rs780446128
View all (4 more)
RCV001332215
RCV002245150
RCV002246734
RCV002472159
RCV003132601
View all (14 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Abnormal cerebral morphology Conflicting classifications of pathogenicity ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Malignant lymphoma, large B-cell, diffuse Conflicting classifications of pathogenicity ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Arthrogryposis Arthrogryposis multiplex congenita BEFREE 31495489
★☆☆☆☆
Found in Text Mining only
Arthrogryposis Arthrogryposis Pubtator 31495489, 33060286, 34621002 Associate
★☆☆☆☆
Found in Text Mining only
Brain Diseases Brain disease Pubtator 34621002 Associate
★☆☆☆☆
Found in Text Mining only
Carcinoma Hepatocellular Hepatocellular carcinoma Pubtator 32813933 Associate
★☆☆☆☆
Found in Text Mining only
Carcinoma Renal Cell Renal cell carcinoma Pubtator 28349958 Associate
★☆☆☆☆
Found in Text Mining only
Conventional (Clear Cell) Renal Cell Carcinoma Renal Carcinoma BEFREE 28349958
★☆☆☆☆
Found in Text Mining only
Developmental Disabilities Development Disorder BEFREE 31495489
★☆☆☆☆
Found in Text Mining only
Developmental Disabilities Developmental disability Pubtator 31495489, 34621002 Associate
★☆☆☆☆
Found in Text Mining only
Microcephaly Microcephaly BEFREE 31495489
★☆☆☆☆
Found in Text Mining only
Microcephaly Microcephaly Pubtator 31495489, 34621002 Associate
★☆☆☆☆
Found in Text Mining only