Drospirenone for adenomyosis
A database annotation lists drospirenone as a clinical candidate for adenomyosis acting as a mineralocorticoid receptor (NR3C2) antagonist, with unknown clinical stage and no supporting study data.
Hypothesized mechanism
Drospirenone may act via mineralocorticoid receptor (NR3C2) antagonism, though its relevance to adenomyosis is not established in the cited claim.
This is the model’s proposed mechanism from the sources on file, not a demonstrated causal pathway. How well the published record supports it is reflected in the rigor and plausibility dimensions of the score, and traced to the verbatim sources at the foot of the page.
How the score was reached, for this pair
The composite score is the sum of five dimensions, each scored 0 to 2 by the model from the evidence on file. Below is the sub-score this specific pair received on each, with what that dimension measures. It scored 0.8 of 10 overall, a exploratory reading, from a pathway rated exploratory in strength.
The model’s overall reasoning for this pair is the summary at the top of the page, and the mechanism it proposed is in the section above.
Scored for women. Female representation not stated — applicability to women uncertain (flagged for full text). (band F4, ×0.75).
Corroboration
Only a single source (Open Targets) is cited, listing one annotated mechanism of action. There are no independent mechanistic lines converging on adenomyosis.
Rigor
The claim is a database annotation with maximum clinical stage 'UNKNOWN' and no underlying study, model, or experimental data. No human or in-vitro evidence is presented.
Specificity
The claim names a specific target (NR3C2, mineralocorticoid receptor) and antagonist action, giving moderate specificity. However, drospirenone is principally a progestin, and the cited mechanism does not address progesterone receptor effects relevant to adenomyosis.
Plausibility
The single named mechanism (mineralocorticoid receptor antagonism) has no stated link to adenomyosis pathophysiology. The claim provides no target-phenotype rationale connecting NR3C2 antagonism to endometrial/myometrial disease.
Consistency
With only one annotated mechanism and no corroborating signals, directional consistency cannot be assessed. There is insufficient evidence to judge whether multiple signals align.
Independent reading, reported beside the score
One outside model cross-reference is reported alongside the composite score. It is recorded separately and is not combined into the score.
MATRIX cross-reference Top 3%
Every Cure’smachine-learned treatment-probability model, drawn from a biomedical knowledge graph. We read its public dataset release, which covers roughly 1,800 drugs and 22,000 diseases. It provides a model-based estimate of how plausible a drug-disease link is given the structure of biomedical knowledge, reported alongside the substrate’s own evidence.
For this pair. MATRIX places this pair at Top 3%, with a treat-score of 3.51 (higher is better; across the pairs we cover, scores span about 3.1 to 4.5).
Scored over MATRIX’s own entities, confirming the same drug and disease: CHEBI:50838 (drug) and MONDO:0010888 (disease). Validate against the source: Every Cure’s MATRIX dataset ↗.
More on the MATRIX cross-reference and its provenance →Regulatory & development status
Where this candidate sits in the US regulatory landscape: whether the drug is already FDA-approved for adenomyosis (on-label) or approved for something else (off-label), whether the molecule is available as a generic or a single-source brand still under patent, and how far it has been studied as a therapy for this condition. Each fact is drawn from a public US source and reported beside the score; none of it is folded into the score.
This is descriptive context, not regulatory advice. It maps the landscape a 505(b)(2)route would build on (an already-approved active ingredient proposed for a new indication), but it is not a 505(b)(2) viability assessment, and says nothing about whether any particular development path is advisable. “Approved” means FDA-approved (US); approvals elsewhere are out of scope.
Approval relationship Off-label
Read from the drug’s FDA label via DailyMed, the US National Library of Medicine’s label repository. A label is only counted when it carries an FDA-approved marketing category (an NDA, ANDA, or biologic BLA); dietary supplements, homeopathics, and OTC-monograph products are not FDA-approved drugs and are excluded.
For this pair. The drug has an FDA-approved label, but for a different indication, so using it for this condition would be off-label.
Generic & patent supply Brand-only, patent-protected
Read from the FDA Orange Book (Approved Drug Products with Therapeutic Equivalence Evaluations), using single-ingredient products only so that patents on novel branded combination formulations are never attributed to the base molecule.
For this molecule. Single-source brand with at least one unexpired Orange Book patent (latest listed expiry Jun 2031).
Latest listed Orange Book patent expiry: Jun 2031. Patent listings can change and do not by themselves determine when a generic may launch.
Layers not covered for this pair
Not covered for this pair. This layer holds documented sex-specific pharmacokinetics for a limited set of drugs, and this compound is not among them yet. A blank here means the drug is not covered by the layer, not that no sex difference exists.
More on the sex-specific pharmacokinetics layer and its sources →Not covered for this pair. The cycle-phase layer is seeded for the strongest-evidence cases so far (PMDD), and this pair is not among them yet. A blank here means the pair is not covered by the layer, not that the effect was found to be phase-independent.
More on the cycle-phase layer and its sources →Source evidence · what the pipeline ingested
These are the sources the pipeline ingested to detect and score this signal, the published literature the model actually read, each tagged by study type. Where the model combined findings the claim is marked as a synthesis (S), and where the literature disagrees the contradiction is shown (!).
Every source below belongs to this signal’s evidence arm, Pathway insights. Whel reads each drug-condition pair through four such arms, each held to its own inclusion bar; a signal is surfaced through one of them.
- 1Per Open Targets (retrieved 2026-06-16), DROSPIRENONE (a Small molecule) is a clinical candidate for adenomyosis (maximum clinical stage UNKNOWN); its mechanism of action is Mineralocorticoid receptor antagonist on target nuclear receptor subfamily 3 group C member 2. Open Targets · mechanistic ↗
- 2In FDA AEMS (the FDA Adverse Event Reporting System, formerly FAERS; retrieved 2026-06-16), 2884 report(s) of ABDOMINAL PAIN were recorded for DROSPIRENONE among female patients (of 47699 female reports for DROSPIRENONE in the analysed sample). This is a raw adverse-event report count, not a disproportionality statistic or evidence of causation, and is subject to reporting bias and confounding. Read two ways: as a safety consideration, and — because it suggests DROSPIRENONE acts on a system relevant to adenomyosis — as a mechanistic lead for further investigation, not evidence of benefit. AEMS · adverse-event report ↗
- 3In FDA AEMS (the FDA Adverse Event Reporting System, formerly FAERS; retrieved 2026-06-16), 542 report(s) of MENORRHAGIA were recorded for DROSPIRENONE among female patients (of 47699 female reports for DROSPIRENONE in the analysed sample). This is a raw adverse-event report count, not a disproportionality statistic or evidence of causation, and is subject to reporting bias and confounding. Read two ways: as a safety consideration, and — because it suggests DROSPIRENONE acts on a system relevant to adenomyosis — as a mechanistic lead for further investigation, not evidence of benefit. AEMS · adverse-event report ↗
These are the verbatim sources the pipeline surfaced and read; they may not be the full published record for a pair, and the score reflects the strength and agreement of the evidence rather than its volume. The strength of these source types is what the rigor dimension of the score reads off. MATRIX, sex-specific pharmacokinetics, and cycle phase are separate layers the pipeline does not ingest, external cross-references reported beside the score, and they link to their own sources in their sections above.
The primary sources and pipelines this evidence is drawn from →