Juvenile dermatomyositis

disease
On this page

Also known as childhood dermatomyositisinflammation of myoseptumJDMJPMjuvenile DMjuvenile myositismyoseptum inflammationmyoseptumitis

Summary

Juvenile dermatomyositis (MONDO:0008054) is a disease with 5 cohort genes (22 GWAS associations across 4 studies) and 26 clinical trials. Top therapeutic interventions include baricitinib, corticotropin, and cyclophosphamide anhydrous.

At a glance

  • Prevalence: 1-9 / 1 000 000 (Worldwide) [Orphanet-validated]
  • Cohort genes: 5
  • GWAS associations: 22
  • Phenotypes (HPO): 45
  • Clinical trials: 26

Clinical features

Epidemiology

Prevalence records

1 prevalence record(s), Orphanet:

TypeClassValueGeographyValidation
Annual incidence1-9 / 1 000 0000.295WorldwideValidated

Signs & symptoms

Clinical features (HPO)

45 HPO clinical features (Orphanet curated; top 45 by frequency):

HPO IDTermFrequency
HP:0000958Dry skinVery frequent (80-99%)
HP:0000988Skin rashVery frequent (80-99%)
HP:0001324Muscle weaknessVery frequent (80-99%)
HP:0002960AutoimmunityVery frequent (80-99%)
HP:0003236Elevated circulating creatine kinase concentrationVery frequent (80-99%)
HP:0003326MyalgiaVery frequent (80-99%)
HP:0003565Elevated erythrocyte sedimentation rateVery frequent (80-99%)
HP:0003761CalcinosisVery frequent (80-99%)
HP:0010783ErythemaVery frequent (80-99%)
HP:0011227Elevated circulating C-reactive protein concentrationVery frequent (80-99%)
HP:0012378FatigueVery frequent (80-99%)
HP:0100540Palpebral edemaVery frequent (80-99%)
HP:0100579Mucosal telangiectasiaeVery frequent (80-99%)
HP:0100585Telangiectasia of the skinVery frequent (80-99%)
HP:0100614MyositisVery frequent (80-99%)
HP:0000989PruritusFrequent (30-79%)
HP:0000992Cutaneous photosensitivityFrequent (30-79%)
HP:0001029PoikilodermaFrequent (30-79%)
HP:0001252HypotoniaFrequent (30-79%)
HP:0001369ArthritisFrequent (30-79%)
HP:0001596AlopeciaFrequent (30-79%)
HP:0001945FeverFrequent (30-79%)
HP:0002019ConstipationFrequent (30-79%)
HP:0002091Restrictive ventilatory defectFrequent (30-79%)
HP:0002633VasculitisFrequent (30-79%)
HP:0002829ArthralgiaFrequent (30-79%)
HP:0003394Muscle spasmFrequent (30-79%)
HP:0200042Skin ulcerFrequent (30-79%)
HP:0001260DysarthriaOccasional (5-29%)
HP:0001376Limitation of joint mobilityOccasional (5-29%)
HP:0001609Hoarse voiceOccasional (5-29%)
HP:0001618DysphoniaOccasional (5-29%)
HP:0001638CardiomyopathyOccasional (5-29%)
HP:0001681Angina pectorisOccasional (5-29%)
HP:0001701PericarditisOccasional (5-29%)
HP:0001824Weight lossOccasional (5-29%)
HP:0002015DysphagiaOccasional (5-29%)
HP:0002027Abdominal painOccasional (5-29%)
HP:0002094DyspneaOccasional (5-29%)
HP:0002206Pulmonary fibrosisOccasional (5-29%)
HP:0002239Gastrointestinal hemorrhageOccasional (5-29%)
HP:0003457EMG abnormalityOccasional (5-29%)
HP:0011675ArrhythmiaOccasional (5-29%)
HP:0011710Bundle branch blockOccasional (5-29%)
HP:0012735CoughOccasional (5-29%)

Identifiers

Disease identifiers

FieldValue
Canonical namejuvenile dermatomyositis
Mondo IDMONDO:0008054
EFOEFO:0000557
MeSHC000598745
Orphanet93672
DOIDDOID:14203
ICD-10-CMM33.0
ICD-111428089375
NCITC27576
SNOMED CT1212005
UMLSC0263666
MedGen120486
GARD0006805
MedDRA10008521
Is cancer (heuristic)no

Also known as: childhood dermatomyositis · inflammation of myoseptum · JDM · JPM · juvenile dermatomyositis · juvenile DM · juvenile myositis · myoseptum inflammation · myoseptumitis

Data availability: 22 GWAS associations (4 studies) · 1 cell line.

Disease family

Classification path: disease › human disease › disease by body system or component › integumentary system disorder › skin disorderdermatitisdermatomyositisjuvenile dermatomyositis

Related subtypes (10): adult dermatomyositis, neonatal dermatomyositis, classical dermatomyositis, adermatopathic dermatomyositis, anti-MDA5 dermatomyositis, anti-Mi2 dermatomyositis, anti-NXP2 dermatomyositis, anti-TIF1 dermatomyositis, anti-SAE dermatomyositis, clinically amyopathic dermatomyositis

Genetics & variants

GWAS landscape

22 GWAS associations across 4 studies. Top hits map to 16 distinct genes (as reported by GWAS).

Top associations by p-value

rsIDp-valueGeneRisk alleleOdds ratio
rs31298432e-48TSBP1-AS1 - HLA-DRAG2.18
rs31171032e-20TSBP1-AS1?1.87
rs122049228e-16HLA-DRB9 - HLA-DRB5?1.91
HLA-DRB1*03:011e-14?1.66
rs1396729533e-09RNU6-695P - LINC02787?5.1
rs1401086898e-09MRPS9-AS2?4.23
rs739581601e-08GPAT2 - ADRA2B?3.39
rs1163863652e-08IL17A - IL17F?6.28
rs788297492e-08LY86-AS1, LY86?4.48
rs65011606e-08TMEM114?0.72
HLA-C*02:027e-08?1.74
rs1120168027e-08SYBU?3.58
HLA-DQB1*02:019e-08?1.62
rs1920748812e-07FANCC?3.26
rs115687633e-07TGFBR1?3.19
rs1821995856e-07SULT2B1?2.59
rs68920069e-07MEF2C-AS1?0.68
rs72559949e-07EMP3?1.94
rs47026985e-06LINC02213, ROPN1LG1.22
rs49212938e-06MIR3142HGG1.21
rs10087239e-06GSDMBT1.2
rs1137035849e-06ARID3A?0.67

Top studies (by case count)

StudyLead authorYearCasesControlsTitle
GCST006053Rothwell S201587915,651Dense genotyping of immune-related loci in idiopathic inflammatory myopathies confirms HLA alleles as the strongest genetic risk factor and suggests different genetic background for major clinical subgroups.
GCST90162630Deakin CT202285112,232Association with HLA-DRβ1 position 37 distinguishes juvenile Dermatomyositis from adult-onset myositis.
GCST90162637Deakin CT202285112,232Association with HLA-DRβ1 position 37 distinguishes juvenile Dermatomyositis from adult-onset myositis.
GCST90270219Rothwell S202250810,260Genome-wide imputation identifies novel associations and localises signals in idiopathic inflammatory myopathies.

Variant details and genetic-evidence tiers

Tier distribution (top 50 variants)

TierVariants
Tier 1: coding0
Tier 2: splice/UTR0
Tier 3: regulatory0
Tier 4: intronic/intergenic22

MAF distribution

BucketVariants
common (>=0.05)10
low_freq (0.01-0.05)10
rare (<0.01)0
unknown2

Functional consequences

ConsequenceCount
intron_variant14
intergenic_variant4
unknown3
non_coding_transcript_exon_variant1

Top variants

rsIDChrPosAllelesMAFConsequenceGenep-valueTier
rs3129843632427949A>G0.05intron_variantTSBP1-AS1 - HLA-DRA2e-48Tier 4: intronic/intergenic
rs3117103632381780A>T0.05intron_variantTSBP1-AS12e-20Tier 4: intronic/intergenic
rs12204922632483836A>C,T0.05intron_variantHLA-DRB9 - HLA-DRB58e-16Tier 4: intronic/intergenic
HLA-DRB1*03:010.121e-14Tier 4: intronic/intergenic
rs139672953190314120T>G0.01intergenic_variantRNU6-695P - LINC027873e-09Tier 4: intronic/intergenic
rs1401086892104979261T>C0.01intron_variantMRPS9-AS28e-09Tier 4: intronic/intergenic
rs73958160296082421G>A,C,T0.02intergenic_variantGPAT2 - ADRA2B1e-08Tier 4: intronic/intergenic
rs116386365652204037C>A,G,T0.01intron_variantIL17A - IL17F2e-08Tier 4: intronic/intergenic
rs7882974966594252C>T0.01intron_variantLY86-AS1, LY862e-08Tier 4: intronic/intergenic
rs6501160168557137G>A,C0.27intergenic_variantTMEM1146e-08Tier 4: intronic/intergenic
HLA-C*02:027e-08Tier 4: intronic/intergenic
rs1120168028109641896C>T0.01intron_variantSYBU7e-08Tier 4: intronic/intergenic
HLA-DQB1*02:019e-08Tier 4: intronic/intergenic
rs192074881995292358G>A,T0.02non_coding_transcript_exon_variantFANCC2e-07Tier 4: intronic/intergenic
rs11568763999130791G>A0.02intron_variantTGFBR13e-07Tier 4: intronic/intergenic
rs1821995851948560940C>G0.03intron_variantSULT2B16e-07Tier 4: intronic/intergenic
rs6892006589154724T>G0.13intron_variantMEF2C-AS19e-07Tier 4: intronic/intergenic
rs72559941948323853T>C0.04intergenic_variantEMP39e-07Tier 4: intronic/intergenic
rs4702698510517796A>G0.05intron_variantLINC02213, ROPN1L5e-06Tier 4: intronic/intergenic
rs49212935160501869A>G,T0.05intron_variantMIR3142HG8e-06Tier 4: intronic/intergenic
rs10087231739910014G>C,T0.05intron_variantGSDMB9e-06Tier 4: intronic/intergenic
rs11370358419936297G>A,C0.05intron_variantARID3A9e-06Tier 4: intronic/intergenic

Genes & proteins

Mendelian disease overlap and somatic drivers

GenCC: 0 · Orphanet: 0 · OMIM-shared: 0 · Dual-evidence (GWAS+Mendelian): 0

Cohort genes → proteins

5 cohort genes, 5 distinct canonical proteins.

Evidence partition

SubsetGenes
gwas_only5

Cohort genes (full)

SymbolHGNCEnsemblUniProtNameEvidence
ATP10BHGNC:13543ENSG00000118322O94823Phospholipid-transporting ATPase VBgwas
GSDMBHGNC:23690ENSG00000073605Q8TAX9Gasdermin-Bgwas
ROPN1LHGNC:24060ENSG00000145491Q96C74Ropporin-1-like proteingwas
ANKRD33BHGNC:35240ENSG00000164236A6NCL7Ankyrin repeat domain-containing protein 33Bgwas
PTTG1HGNC:9690ENSG00000164611O95997Securingwas

Cohort function summary

Lead sentence per gene, UniProt-curated.

SymbolProtein nameFunction (lead sentence)
ATP10BPhospholipid-transporting ATPase VBCatalytic component of a P4-ATPase flippase complex, which catalyzes the hydrolysis of ATP coupled to the transport of glucosylceramide (GlcCer) from the outer to the inner leaflet of lysosome membranes.
GSDMBGasdermin-BPrecursor of a pore-forming protein that acts as a downstream mediator of granzyme-mediated cell death.
ROPN1LRopporin-1-like proteinFunctions as part of axonemal radial spoke complexes that play an important part in the motility of sperm and cilia.
PTTG1SecurinRegulatory protein, which plays a central role in chromosome stability, in the p53/TP53 pathway, and DNA repair.

Protein-family classification

Druggable: 0 · Difficult: 2 · Unknown: 3 · Druggable fraction: 0.0

Family distribution

Cohort families vs a genome-wide background (hypergeometric, BH-FDR; fold = observed/expected). Counts kept; sorted by enrichment, so the catch-all Other/Unknown bucket no longer leads.

FamilyGenesFoldFDR
Scaffold/PPI13.5×0.608
Transcription factor11.6×0.608
Other/Unknown31.1×0.608

Per-gene assignment

SymbolFamilyDruggable?ECInterPro (top 3)
ATP10BTranscription factorno7.6.2.1P_typ_ATPase, P-type_ATPase_IV, ATPase_P-typ_transduc_dom_A_sf
GSDMBOther/UnknownnoGasdermin, Gasdermin_pore, Gasdermin_PUB
ROPN1LOther/UnknownnoROP_DD
ANKRD33BScaffold/PPInoAnkyrin_rpt, Ankyrin_rpt-contain_sf
PTTG1Other/UnknownnoSecurin_separation_inhibitor

Expression context

Cohort genes with no expression data: 0.

5 cohort genes are a single-cell marker in ≥1 SCXA experiment.

Breadth distribution (Bgee present_calls)

BucketGenes
narrow (1-5 tissues)0
moderate (6-20)0
broad (>20)5
unknown0

Top tissues across cohort

TissueCohort genes
colonic mucosa1
mucosa of sigmoid colon1
palpebral conjunctiva1
mucosa of transverse colon1
rectum1
right lobe of liver1
bronchial epithelial cell1
left testis1
right testis1
Brodmann (1909) area 231
sural nerve1
tibialis anterior1
oocyte1
secondary oocyte1
ventricular zone1

Per-gene tissue summary (top 30)

SymbolBgee breadthFANTOM5 breadthSCXATop tissues
ATP10B220tissue_specificmarkermucosa of sigmoid colon, colonic mucosa, palpebral conjunctiva
GSDMB206tissue_specificmarkerrectum, right lobe of liver, mucosa of transverse colon
ROPN1L167broadmarkerleft testis, right testis, bronchial epithelial cell
ANKRD33B178ubiquitousmarkertibialis anterior, Brodmann (1909) area 23, sural nerve
PTTG1246ubiquitousmarkeroocyte, secondary oocyte, ventricular zone

Protein interactions among cohort

Intra-cohort edges: 0.

Hub genes (top 10 by interactor count)

SymbolInteractor count
PTTG12,225
ANKRD33B1,486
ATP10B970
ROPN1L945
GSDMB703

Structural data

PDB: 3 · AlphaFold-only: 2 · No structure: 0

Cohort genes with PDB structures (top 30)

SymbolUniProtPDB entries
GSDMBQ8TAX911
PTTG1O959972
ROPN1LQ96C741

AlphaFold-only cohort genes (top 30 by pLDDT)

SymbolUniProtpLDDT
ATP10BO9482371.60
ANKRD33BA6NCL767.74

Function

Pathway analysis

Distinct Reactome pathways touched by cohort: 6. Enrichment computed across 5 evidence-associated genes (2 with Reactome annotation).

Pathways by enrichment

Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 2 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.

PathwayCohort genesFoldFDRSample cohort genes
Ion transport by P-type ATPases1103.8×0.023ATP10B
APC/C:Cdc20 mediated degradation of Securin195.2×0.023PTTG1
APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1185.2×0.023PTTG1
Ion channel transport148.0×0.031ATP10B
Separation of Sister Chromatids130.4×0.039PTTG1
Transport of small molecules112.6×0.078ATP10B

GO biological processes by enrichment

Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 4 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.

GO termCohort genesFoldFDRSample cohort genes
lysosomal membrane organization14213.0×0.004ATP10B
cytotoxic T cell pyroptotic cell death12106.5×0.004GSDMB
homologous chromosome segregation1842.6×0.007PTTG1
obsolete killing by host of symbiont cells1351.1×0.010GSDMB
programmed cell death1324.1×0.010GSDMB
epithelial cilium movement involved in extracellular fluid movement1191.5×0.013ROPN1L
sperm capacitation1168.5×0.013ROPN1L
phospholipid translocation1156.0×0.013ATP10B
chromosome organization1145.3×0.013PTTG1
pyroptotic inflammatory response1127.7×0.013GSDMB
killing of cells of another organism168.0×0.023GSDMB
defense response to Gram-negative bacterium142.1×0.033GSDMB
flagellated sperm motility129.3×0.044ROPN1L
defense response to bacterium127.0×0.044GSDMB
DNA repair116.0×0.069PTTG1
cell division111.5×0.089PTTG1
spermatogenesis18.8×0.109PTTG1

Therapeutics

Drugs indicated for this disease

1 approved, 4 in late-stage (phase 3) trials. Disease-direct ChEMBL indications, not inferred from the associated-gene cohort below.

DrugDevelopment status
PrednisoneApproved (phase 4)
BaricitinibPhase 3 (in late-stage trials)
CyclosporinePhase 3 (in late-stage trials)
MethotrexatePhase 3 (in late-stage trials)
MethylprednisolonePhase 3 (in late-stage trials)

Earlier-phase candidates (phase 2, investigational — efficacy not yet established): Rituximab.

Drug target analysis

Approved (phase 4): 0 · Phase ≥3: 0 · Phased (≥1): 0 · Undrugged: 5

Druggability breadth: 0 of 5 evidence-associated genes (0%) have a ChEMBL target (buckets above are over the deeply-mined display cohort).

Top cohort targets by molecule count

SymbolMoleculesMax phase
ATP10B00
GSDMB00
ROPN1L00
ANKRD33B00
PTTG100

Bioactivity and enzyme data

Enzyme cohort genes (≥1 EC): 1.

Cohort enzymes (BRENDA EC)

SymbolEC numbersNames
ATP10B7.6.2.1P-type phospholipid transporter

Pharmacogenomics

Cohort genes with a PharmGKB record: 5; with CPIC/DPWG dosing guidelines: 0.

No cohort gene has a CPIC/DPWG genotype-guided dosing guideline (PharmGKB).

Chemical tractability of cohort targets

0 approved/phased compounds have measured bioactivity against a cohort gene (and aren’t yet in disease-level trials). This is a research / tractability signal, NOT a therapeutic recommendation — a bioactivity row often reflects off-target or screening binding (e.g. promiscuous kinase inhibitors against a cohort kinase), implying no disease mechanism.

Druggability pyramid

Cohort genes binned by druggability tier (high → low):

TierDefinitionGenesSymbols
AApproved (phase 4 drug)0
BPhased (≥1) drug, not yet approved0
CDruggable family + PDB, no drug0
DDruggable family + AlphaFold only, no drug0
EDifficult family or no structure, no drug5ATP10B, GSDMB, ROPN1L, ANKRD33B, PTTG1

Undrugged target profiles

5 cohort genes are undrugged. Ranked by ‘starting-point quality’ (assay depth + drugged-partner adjacency).

SymbolChEMBL assaysDrugged partners (top 3)
ATP10B0
GSDMB0
ROPN1L0
ANKRD33B0
PTTG10

Clinical trials & evidence

Clinical trials

Clinical trials: 26.

Phase distribution (across all retrieved trials)

PhaseTrials
Not specified14
PHASE24
PHASE43
PHASE12
PHASE31
PHASE2/PHASE31
PHASE1/PHASE21

Top trials by phase / activity

NCTPhaseStatusTitle
NCT00815282PHASE4COMPLETEDImmune Response After Human Papillomavirus Vaccination in Patients With Autoimmune Disease
NCT01151644PHASE4UNKNOWNSafety and Efficacy of Anti-Pandemic H1N1 Vaccination in Rheumatic Diseases
NCT02245841PHASE4COMPLETEDEfficacy and Safety of H.P. Acthar Gel for the Treatment of Refractory Cutaneous Manifestations of Dermatomyositis
NCT06154252PHASE2/PHASE3RECRUITINGRESET-Myositis: An Open-Label Study to Evaluate the Safety and Efficacy of CABA-201 in Subjects With Active Idiopathic Inflammatory Myopathy or Juvenile Idiopathic Inflammatory Myopathy
NCT00323960PHASE3COMPLETEDFive-year Actively Controlled Clinical Trial in New Onset Juvenile Dermatomyositis
NCT07089121PHASE1/PHASE2RECRUITINGDescartes-08 for Children, Adolescents, and Young Adults With Autoimmune Disorders
NCT07111065PHASE2RECRUITINGFAST for DM - Fatty Acid Supplementation Trial (FAST) for Dermatomyositis (DM)
NCT00106184PHASE2COMPLETEDRituximab for the Treatment of Refractory Adult and Juvenile Dermatomyositis (DM) and Adult Polymyositis (PM)
NCT05000216PHASE2TERMINATEDCOVID-19 Booster Vaccine in Autoimmune Disease Non-Responders
NCT05524311PHASE2COMPLETEDBaricitinib in the Treatment of New-onset Juvenile Dermatomyositis (MYOCIT)
NCT06569472PHASE1RECRUITINGClinical Trial of CD19-targeted CAR-T Therapy for Refractory Juvenile Dermatomyositis
NCT07184450PHASE1RECRUITINGClinical Study of BCMA/CD70-targeted CAR-T Therapy for Refractory Pediatric Rheumatic Diseases
NCT00059748Not specifiedRECRUITINGStudies of the Natural History, Pathogenesis, and Outcome of Autoinflammatory Diseases Including Juvenile Dermatomyositis
NCT01276470Not specifiedRECRUITINGEnvironmental Risk Factors for the Anti-synthetase Syndrome
NCT07374107Not specifiedRECRUITINGMIHRA - Patient-Rooted Insights for Shaping Myositis Science (PRISMS)
NCT01217320Not specifiedUNKNOWNCreatine Supplementation in Pediatric Rheumatology
NCT01697254Not specifiedCOMPLETEDThe CARRA Registry
NCT01724580Not specifiedAPPROVED_FOR_MARKETINGCompassionate Use Protocol for the Treatment of Autoinflammatory Syndromes
NCT02267005Not specifiedCOMPLETEDThe Effect of Creatine Supplementation on Muscle Function in Childhood Myositis
NCT03430388Not specifiedCOMPLETEDYellow Fever Vaccine in Patients With Rheumatic Diseases
NCT03432455Not specifiedUNKNOWNIncidence and Prevalence of Juvenile Dermatomyositis
NCT03433638Not specifiedUNKNOWNJuvenile Dermatomyositis
NCT05509140Not specifiedCOMPLETEDClinical Analysis of Juvenile Dermatomyositis Patients
NCT05545839Not specifiedCOMPLETEDTransition to Adulthood Through Coaching and Empowerment in Rheumatology
NCT06556992Not specifiedCOMPLETEDFitness Integrative Training for Pediatric Rheumatology Disorders
NCT07138157Not specifiedCOMPLETEDComparison Of The Effects Of Two Different Exercise Training Based On Internal And External Focus In Children and Adolescents With Rheumatic Diseases

Drugs tested across these trials (top 30)

MoleculeMax phaseTrials referencing
BARICITINIB41
CORTICOTROPIN41
CYCLOPHOSPHAMIDE ANHYDROUS41
ELASOMERAN41
TOZINAMERAN41
CREATINE31
YELLOW FEVER VACCINE31
CHEMBL542785401