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RepurpOS

MCAS (Mast Cell Activation Syndrome)

Disease intelligence for Mast Cell Activation Syndrome: 49 alterations and 7 ranked therapeutics from curated public databases.

Disease overview

Alterations
49
Molecular (A)
0
Clinical (B–E)
49
Direct drugs
0
Via biomarker
7
Natural agents
0
Natural products
0
Merged ranked
7

Sources: Open Targets, HPO, ClinicalTrials.gov, PubMed Literature · Pipeline phase 6 · Updated 2026-07-10

Identifiers: MONDO: MONDO:0800103 · ORPHA: ORPHA:280795 · UMLS_CUI: C5680519

Alterations

49 total · Types A (molecular) through E (functional)

NameTypeSubtypeDirection FrequencyEvidenceSourcesLinks
Abnormal abdomen morphology Pathology Pathological finding — — Moderate HPO, Monarch
Anteverted nares Pathology Pathological finding — — Moderate HPO, Monarch
Aplasia/Hypoplasia of the cerebellar vermis Pathology Pathological finding — — Moderate HPO, Monarch
Ataxia Pathology Pathological finding — — Moderate HPO, Monarch
Cerebellar vermis hypoplasia Pathology Pathological finding — — Moderate HPO, Monarch
Cirrhosis Pathology Pathological finding — — Moderate HPO, Monarch
Coloboma Pathology Pathological finding — — Moderate HPO, Monarch
Dystonia Pathology Pathological finding — — Moderate HPO, Monarch
Elevated circulating hepatic transaminase concentration Lab / Clinical Lab value — — Moderate HPO, Monarch
Encephalocele Pathology Pathological finding — — Moderate HPO, Monarch
Esophageal varix Pathology Pathological finding — — Moderate HPO, Monarch
Generalized hypotonia Pathology Pathological finding — — Moderate HPO, Monarch
Global developmental delay Pathology Pathological finding — — Moderate HPO, Monarch
Growth delay Pathology Pathological finding — — Moderate HPO, Monarch
Hepatic fibrosis Pathology Pathological finding — — Moderate HPO, Monarch
Hepatomegaly Pathology Pathological finding — — Moderate HPO, Monarch
Hyperreflexia Pathology Pathological finding — — Moderate HPO, Monarch
Hypertelorism Pathology Pathological finding — — Moderate HPO, Monarch
Hypertension Pathology Pathological finding — — Moderate HPO, Monarch
Hypotonia Pathology Pathological finding — — Moderate HPO, Monarch
Intrahepatic bile duct dilatation Pathology Pathological finding — — Moderate HPO, Monarch
Moderate intellectual disability Functional Functional test — — Moderate HPO, Monarch
Molar tooth sign on MRI Pathology Pathological finding — — Moderate HPO, Monarch
Multiple small medullary renal cysts Pathology Pathological finding — — Moderate HPO, Monarch
Nephronophthisis Pathology Pathological finding — — Moderate HPO, Monarch
Nystagmus Pathology Pathological finding — — Moderate HPO, Monarch
Occipital encephalocele Pathology Pathological finding — — Moderate HPO, Monarch
Oculomotor apraxia Pathology Pathological finding — — Moderate HPO, Monarch
Optic disc pallor Pathology Pathological finding — — Moderate HPO, Monarch
Portal hypertension Pathology Pathological finding — — Moderate HPO, Monarch
Postaxial hand polydactyly Pathology Pathological finding — — Moderate HPO, Monarch
Ptosis Pathology Pathological finding — — Moderate HPO, Monarch
Renal cyst Pathology Pathological finding — — Moderate HPO, Monarch
Round face Pathology Pathological finding — — Moderate HPO, Monarch
Seizure Pathology Pathological finding — — Moderate HPO, Monarch
Spasticity Pathology Pathological finding — — Moderate HPO, Monarch
Splenomegaly Pathology Pathological finding — — Moderate HPO, Monarch
Stage 5 chronic kidney disease Pathology Pathological finding — — Moderate HPO, Monarch
Unilateral renal agenesis Pathology Pathological finding — — Moderate HPO, Monarch
Vascular dilatation Pathology Pathological finding — — Moderate HPO, Monarch
Wide mouth Pathology Pathological finding — — Moderate HPO, Monarch
Duration of Response Lab / Clinical Lab value — — Emerging ClinicalTrials.gov
Effectiveness of caregiver massage to reduce child and caregiver distress and promote child health-related quality of life Scales & PROs Clinical scale — — Emerging ClinicalTrials.gov
Incidence of Graft Rejection Lab / Clinical Lab value — — Emerging ClinicalTrials.gov
Incidence of Non-relapse Mortality Lab / Clinical Lab value — — Emerging ClinicalTrials.gov
Overall survival Lab / Clinical Lab value — — Emerging ClinicalTrials.gov
Probability of severe (grade III/IV) GVHD in each arm Lab / Clinical Lab value — — Emerging ClinicalTrials.gov
Quality of life Scales & PROs Clinical scale — — Emerging ClinicalTrials.gov
The Proportion of Participants Who Experienced a Systemic Allergic Reaction (CoFAR Grade 2+ Regardless of Tryptase or CoFAR Grade 1 With Elevated Tryptase) Within 90 Minutes Post-vaccination to the First Dose, Adjusting for Placebo. Lab / Clinical Lab value — — Emerging ClinicalTrials.gov

Therapeutics

Direct disease associations, biomarker-linked drugs, OSMF narrative-review natural agents, and merged ranking. Only agents with registry trials or published clinical literature are shown by default.

DrugTypePhaseEvidence ScorePrice (UK / US)Trials & literatureSourcesLinks
CETIRIZINE Small molecule Approved Strong 90 UK £1–£2 / 30 tabs (10mg) · US $4 / 30 tabs (GoodRx)
2 pubs
View evidence
Clinical practice, Literature
FAMOTIDINE Repurposing Small molecule Approved Strong 88 UK £2–£4 / 28–60 tabs · US $5–$10 / 30–60 tabs (Cost Plus)
2 pubs
View evidence
Clinical practice, Literature
MONTELUKAST Repurposing Small molecule Approved Moderate 82 UK £2–£5 / 28 tabs · US $5–$12 / 30 tabs
2 pubs
View evidence
Literature
LORATADINE Small molecule Approved Strong 85 UK £1–£2 / 30 tabs · US $3–$6 / 30 tabs
2 pubs
View evidence
Clinical practice
KETOTIFEN Repurposing Small molecule Approved Moderate 80 UK £8–£15 / 30–60 tabs · US $10–$20 / supply
2 pubs
View evidence
Literature, OSMF review
CROMOLYN SODIUM Repurposing Small molecule Approved Moderate 78 UK £10–£20 / inhaler or amps · US $15–$30 / supply
2 pubs
View evidence
Clinical practice
FEXOFENADINE Small molecule Approved Strong 83 UK £3–£6 / 30 tabs (120-180mg) · US $8–$15 / 30 tabs
2 pubs
View evidence
Clinical practice

No therapeutics in this section.

DrugTypePhaseEvidence ScorePrice (UK / US)Trials & literatureSourcesLinks
CETIRIZINE via Clinical phenotype (MCAS) Small molecule Approved Strong 90 UK £1–£2 / 30 tabs (10mg) · US $4 / 30 tabs (GoodRx)
2 pubs
View evidence
Clinical practice, Literature
FAMOTIDINE Repurposing via Clinical phenotype (MCAS) Small molecule Approved Strong 88 UK £2–£4 / 28–60 tabs · US $5–$10 / 30–60 tabs (Cost Plus)
2 pubs
View evidence
Clinical practice, Literature
MONTELUKAST Repurposing via Clinical phenotype (MCAS) Small molecule Approved Moderate 82 UK £2–£5 / 28 tabs · US $5–$12 / 30 tabs
2 pubs
View evidence
Literature
LORATADINE via Clinical phenotype (MCAS) Small molecule Approved Strong 85 UK £1–£2 / 30 tabs · US $3–$6 / 30 tabs
2 pubs
View evidence
Clinical practice
KETOTIFEN Repurposing via Clinical phenotype (MCAS) Small molecule Approved Moderate 80 UK £8–£15 / 30–60 tabs · US $10–$20 / supply
2 pubs
View evidence
Literature, OSMF review
CROMOLYN SODIUM Repurposing via Clinical phenotype (MCAS) Small molecule Approved Moderate 78 UK £10–£20 / inhaler or amps · US $15–$30 / supply
2 pubs
View evidence
Clinical practice
FEXOFENADINE via Clinical phenotype (MCAS) Small molecule Approved Strong 83 UK £3–£6 / 30 tabs (120-180mg) · US $8–$15 / 30 tabs
2 pubs
View evidence
Clinical practice

Alterations and therapeutics are aggregated from public databases (Open Targets, HPO, ChEMBL, DGIdb, and others). Natural agents are candidates from OSMF narrative reviews on opensourcemed.info/chronic-disease.html — not approved treatments. This page is for research orientation only — not medical advice.