#1Proposed tier Unassignedhuman observationalAwaiting human appraisal
Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report.
Europe PMC · 2026 · PMID 41752902 · DOI 10.3390/life16020265
human-observational
Scientific intelligence record
Experience 2.0
Melanocortin peptide analog
Synthetic cyclic melanocortin-receptor agonist studied for pigmentation and other effects.
Record status
Traceability partial
Last meaningful update: 9/20/2026
Ranked research corpus
183
Categorized publications with transparent machine-proposed ranking; human appraisal pending.
global evidence atlas
This is a deduplicated literature screening registry—not a claim that every mention directly proves efficacy or safety. Machine proposals remain visibly separate from governed human appraisal.
183 matching records · ranked 2026-09-18
Page 1 of 8
Europe PMC · 2026 · PMID 41752902 · DOI 10.3390/life16020265
human-observational
OpenAlex · 2026 · Source ID doi:10.17605/osf.io/2b7ku · DOI 10.17605/osf.io/2b7ku
synthesis
OpenAlex · 2026 · Source ID doi:10.1007/s40278-026-93507-7 · DOI 10.1007/s40278-026-93507-7
contextual-unclassified
OpenAlex · 2026 · Source ID doi:10.1007/s40278-026-97428-8 · DOI 10.1007/s40278-026-97428-8
contextual-unclassified
OpenAlex · 2025 · Source ID doi:10.1016/j.jaad.2025.05.532 · DOI 10.1016/j.jaad.2025.05.532
contextual-unclassified
Europe PMC · 2025 · PMID 40210573 · DOI 10.1016/j.ijom.2025.03.014
human-observational
Europe PMC · 2024 · PMID 39442746 · DOI 10.1016/j.ejphar.2024.177068
preclinical-animal
WPF seed · 2024 · PMID 39302005 · DOI 10.1111/1556-4029.15633
human-observational
Europe PMC · 2024 · PMID 38253222 · DOI 10.1016/j.neuropharm.2024.109848
human-interventional
Europe PMC · 2024 · PMID 38604549 · DOI 10.1016/j.mce.2024.112232
preclinical-animal
WPF seed · 2024 · PMID 38908525 · DOI 10.1016/j.toxicon.2024.107824
laboratory-mechanistic
OpenAlex · 2024 · Source ID doi:10.1093/bjd/ljae090.380 · DOI 10.1093/bjd/ljae090.380
contextual-unclassified
Europe PMC · 2024 · PMID 39296259 · DOI 10.1021/acsptsci.4c00129
laboratory-mechanistic
Europe PMC · 2024 · PMID 38815086 · DOI 10.1210/endocr/bqae063
preclinical-animal
Europe PMC · 2022 · PMID 35188390 · DOI 10.1021/acs.jmedchem.1c01848
preclinical-animal
Europe PMC · 2022 · PMID 35736369
human-observational
Europe PMC · 2021 · PMID 32912824 · DOI 10.1016/j.drugpo.2020.102890
preclinical-animal
Europe PMC · 2021 · PMID 34440144 · DOI 10.3390/biomedicines9080941
preclinical-animal
Europe PMC · 2021 · PMID 33166186 · DOI 10.1152/ajpendo.00059.2020
preclinical-animal
Europe PMC · 2021 · PMID 34375685 · DOI 10.1016/j.peptides.2021.170623
preclinical-animal
Europe PMC · 2021 · PMID 33245851 · DOI 10.1002/dta.2986
preclinical-animal
OpenAlex · 2021 · Source ID doi:10.61148/2766-8614/jccrcs/028 · DOI 10.61148/2766-8614/jccrcs/028
contextual-unclassified
Europe PMC · 2021 · PMID 34464955 · DOI 10.1159/000514492
human-observational
Europe PMC · 2021 · PMID 33332767 · DOI 10.1113/ep088838
preclinical-animal
Europe PMC · 2021 · PMID 33460908 · DOI 10.1016/j.esxm.2020.100298
human-observational
governance and regulatory context
No new outcome conclusion is inferred from discovery metadata. Named accountable approval is required for governed scientific conclusions.
Absence of a record in this pass is not proof that no authorization exists. Status must remain jurisdiction-, product-, formulation-, and date-specific.
No machine-proposed evidence-strength grades exist yet for this compound; all screening records are unassigned pending further review.
Melanotan II evidence · ranking key
A tier describes the evidentiary role and design strength of a source. It is not a popularity score, proof that every conclusion is correct, or a substitute for claim-level review.
Large, well-conducted randomized trials; prespecified major outcomes; rigorous systematic reviews or meta-analyses; and major regulatory assessments.
Smaller randomized trials, strong prospective cohorts, prespecified secondary analyses, and high-quality comparative-effectiveness studies.
Retrospective cohorts, claims-database studies, pharmacovigilance analyses, mechanistic human research, and well-documented case series.
Case reports, conference abstracts, preclinical research, hypothesis-generating analyses, and expert commentary.
peptide explorer
Evidence-class labeling remains visible even when interactive rendering is unavailable. Representative geometry is not an experimentally determined or predicted biological conformation.
Fully specified molecular identity
Complete cyclic 2D identity; the schematic does not depict the lactam ring as a physical conformer.
Sources: NIH PubChem — Melanotan II · reviewed 2026-09-17
APA
World Peptide Foundation. (n.d.). Melanotan II — Peptide Scientific Intelligence. World Peptide Foundation. (Updated September 20, 2026.) https://www.worldpeptidefoundation.org/directory/melanotan-ii
AMA / Vancouver
World Peptide Foundation. Melanotan II — Peptide Scientific Intelligence. World Peptide Foundation website. Updated September 20, 2026. https://www.worldpeptidefoundation.org/directory/melanotan-ii
Featured tiered studies
0
Cornerstone publications with study-level interpretation, limitations, and tier disclosure.
Research domains
6
Clinical and scientific questions synthesized independently across the evidence atlas.
Governed reviewed evidence
25
Database records promoted through the governed publication workflow—not the corpus total.
Corpus generated 2026-09-18. Counts remain separately labeled to prevent automated screening from being represented as completed human review.
Human experience · separate evidence stream
Eligible observations remain below the privacy and reliability threshold. WPF will not convert a handful of reports into a percentage, trend, or clinical claim.
Observation is valuable human context. It is not evidence of causation, efficacy, or safety.
Public display gate
n ≥ 20 eligible observations
Exact progress remains private before the threshold.
Intelligence snapshot
A compact view of what is represented, what remains unresolved, and how completely the record can be traced.
Ranked research corpus
183
Categorized screening records; proposed rankings remain pending human appraisal.
Featured tiered studies
0
Cornerstone studies with published study-level interpretation and tier disclosure.
Research domains
6
Independent evidence dossiers covering the major research questions.
Governed reviewed evidence
25
Reviewed database records promoted through the governed publication workflow.
Contradictions
0
Conflicting evidence relationships that remain visible.
Research gaps
1
Questions the current record identifies as unresolved.
Connected media
0
Media records explicitly linked to this scientific record.
What we know
The project separates represented evidence from qualification, contradiction, uncertainty, and what the evidence does not establish.
Reconciled domain conclusions
Melanotan II no longer relies on the legacy “no public claim” state. Each research domain publishes a bounded conclusion, confidence level, evidence synthesis, limitations, geographic applicability, regulatory interpretation, and research gaps.
Inspect the reconciled evidence atlasPubMed-indexed clinical trial; journal article; research support, non-u.s. gov't; retracted publication examining exercise-induced metallothionein expression in human skeletal muscle fibres. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; review examining metallothionein in brain disorders. Machine-staged source candidate; findings and limitations require accountable review before publication.
Scientific context
Existing reviewed chemistry is preserved as scientific context. Chemistry and mechanism information do not establish clinical efficacy or safety.
Chemical identity describes the recorded molecular information. It does not establish biological activity, clinical efficacy, safety, or therapeutic suitability.
Explore further
Move from this peptide record into the project's broader evidence, research, comparison, and methodology systems.
Research
Chronology, unresolved research questions, opportunities, and researcher activity remain descriptive rather than evaluative.
1984 · study · Temporal status not established
Gene
1984 · study · Temporal status not established
Molecular and cellular biology
1995 · study · Temporal status not established
Journal of neurochemistry
1999 · study · Temporal status not established
Peptides
2000 · study · Temporal status not established
Laboratory investigation; a journal of technical methods and pathology
2000 · study · Temporal status not established
Biological trace element research
2001 · study · Temporal status not established
Progress in nucleic acid research and molecular biology
2002 · study · Temporal status not established
Current eye research
2002 · study · Temporal status not established
Journal of chromatography. A
2003 · study · Temporal status not established
Annals of the New York Academy of Sciences
2005 · study · Temporal status not established
Experimental physiology
2005 · study · Temporal status not established
Journal of Alzheimer's disease : JAD
2007 · study · Temporal status not established
Journal of animal science
2007 · study · Temporal status not established
The Journal of pharmacology and experimental therapeutics
2010 · study · Temporal status not established
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
2010 · study · Temporal status not established
Life sciences
2011 · study · Temporal status not established
The British journal of dermatology
2014 · study · Temporal status not established
Journal of medicinal chemistry
2017 · study · Temporal status not established
Oxidative medicine and cellular longevity
2020 · study · Temporal status not established
ACS pharmacology & translational science
2020 · study · Temporal status not established
CEN case reports
2020 · study · Temporal status not established
American journal of physiology. Regulatory, integrative and comparative physiology
2020 · study · Temporal status not established
Scientific reports
2024 · study · Temporal status not established
Toxicon : official journal of the International Society on Toxinology
2024 · study · Temporal status not established
Journal of forensic sciences
2026 · regulatory · Temporal status not established
European Union
2026 · regulatory · Temporal status not established
United States
The represented chronology reflects records currently included in the governed dataset and does not claim to represent the entire scientific literature.
No institutional claim record is currently represented for this peptide.
Evidence is missing or not represented as studied; this is not a conclusion that the intervention does not work.
These are bibliographic author identities derived from represented records. Name strings are not proof of unique real-world researcher identity, and publishing organizations are not treated as institutional affiliations.
2 represented evidence records
Years represented: 2003, 2020
Publishing organizations appearing in records: ACS pharmacology & translational science, Annals of the New York Academy of Sciences
1 represented evidence record
Years represented: 2000
Publishing organizations appearing in records: Laboratory investigation; a journal of technical methods and pathology
1 represented evidence record
Years represented: 2005
Publishing organizations appearing in records: Journal of Alzheimer's disease : JAD
1 represented evidence record
Years represented: 2010
Publishing organizations appearing in records: Life sciences
1 represented evidence record
Years represented: 2010
Publishing organizations appearing in records: Life sciences
Connections
Connections appear only when they are represented by the project’s underlying records.
institution
institution
institution
institution
institution
institution
institution
institution
institution
institution
institution
institution
Traceability
The experience makes incomplete links visible instead of presenting a false impression of perfect provenance.
Source publication state
A governed source may be verified and approved for publication while its claim-to-evidence link is still incomplete.
Reviewer provenance state
“Human scientist reviewed: no” means that specific source-path attribution is not recorded. It does not silently negate the separate publication-review state.
Domain conclusion → Evidence
Connected
Evidence → Source
Connected
Source → Original record
Connected
Traceability documents how the project connects statements to records. It does not establish that a source is scientifically valid or that a claim is clinically true.
Reconciled for 6 domain conclusions and 0 featured studies.
Detailed study-to-domain mappings and original-source paths appear in the Melanotan II evidence-governance section.
Inspect the ranked source recordsObservational archive
Observational archive data is intentionally separated from published scientific evidence.
Observational boundary
Insufficient eligible observations are available for display under the current filters.
Insufficient eligible observations are currently represented to display aggregated findings for this peptide.
Regulatory context
Regulatory status is jurisdiction-specific and time-dependent. It is presented as context, not as a recommendation for use or a substitute for scientific evidence evaluation.
European Union
Regulator: Not represented
As of: 9/9/2026 · Temporal status not established
Regulatory context incomplete: regulator.
United States
Regulator: Not represented
As of: 9/9/2026 · Temporal status not established
Regulatory context incomplete: regulator.
Research + media
Only media explicitly linked through the project’s relationship system appears here.
No scientifically connected media is currently represented for this peptide.
Sources + provenance
Generated: 9/24/2026, 3:25:47 AM
Tier classifies source design and evidentiary role. Confidence reflects risk of bias, sample size, comparator quality, outcome relevance, follow-up, missing data, directness, replication, reporting quality, and whether conclusions stay within the measured results.
Funding and conflicts are disclosed and considered, but sponsorship never automatically changes a tier. Corrections, retractions, and expressions of concern override the original rating.
This is a representative, sequence-derived model ordered by residue position only. It is not the peptide's experimentally determined or predicted biological conformation, and it carries no claim about real bond angles, distances, secondary structure, binding sites, or activity.
PubMed-indexed journal article; research support, non-u.s. gov't examining expression of metallothionein-i and ii in skin ageing and its association with skin proliferation. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural examining 1,4-disubstituted-[1,2,3]triazolyl-containing analogues of mt-ii: design, synthesis, conformational analysis, and biological activity. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining characterization of metallothioneins (mt-i and mt-ii) in the yak. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining pkc-α is involved in the signaling of phagocytosis induced by two snake venom secretory pla2s in macrophages. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural; research support, non-u.s. gov't examining the role of mt in neurological disorders. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural examining the effects of the melanocortin agonist (mt-ii) on subcutaneous and visceral adipose tissue in rodents. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, u.s. gov't, p.h.s. examining expression of metallothionein isoforms in human chorioretinal complex. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining evidence for oligomerization of metallothioneins in their functional state. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining structure-function studies on the cyclic peptide mt-ii, lactam derivative of alpha-melanotropin. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't; research support, u.s. gov't, p.h.s. examining mt-ii induces penile erection via brain and spinal mechanisms. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining human metallothionein mt-i and mt-ii processed genes. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining development of ligand-drug conjugates targeting melanoma through the overexpressed melanocortin 1 receptor. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, u.s. gov't, p.h.s.; review examining regulation of metallothionein gene expression. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed case reports; journal article; review examining melanotan ii: a possible cause of renal infarction: review of the literature and case report. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed case reports; journal article examining barbie drug identification: not a child's play. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining development of high-fat-diet-induced obesity in female metallothionein-null mice. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed comparative study; journal article examining attenuation of cadmium-induced testicular injury in metallothionein-iii null mice. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural; research support, non-u.s. gov't examining sites and sources of sympathoexcitation in obese male rats: role of brain insulin. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining cytoprotection by metallothionein against gastroduodenal mucosal injury caused by ethanol in mice. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining radiation exposure does not alter metallothionein iii isoform expression in mouse brain. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, u.s. gov't, non-p.h.s.; research support, u.s. gov't, p.h.s. examining metallothionein induction in neonatal rat primary astrocyte cultures protects against methylmercury cytotoxicity. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed comparative study; journal article; research support, u.s. gov't, p.h.s. examining regulation, linkage, and sequence of mouse metallothionein i and ii genes. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural examining metallothioneins regulate atp7a trafficking and control cell viability during copper deficiency and excess. Machine-staged source candidate; findings and limitations require accountable review before publication.
1 represented evidence record
Years represented: 2014
Publishing organizations appearing in records: Journal of medicinal chemistry
1 represented evidence record
Years represented: 2014
Publishing organizations appearing in records: Journal of medicinal chemistry
1 represented evidence record
Years represented: 2014
Publishing organizations appearing in records: Journal of medicinal chemistry
1 represented evidence record
Years represented: 2007
Publishing organizations appearing in records: The Journal of pharmacology and experimental therapeutics
1 represented evidence record
Years represented: 1999
Publishing organizations appearing in records: Peptides
1 represented evidence record
Years represented: 1984
Publishing organizations appearing in records: Molecular and cellular biology
1 represented evidence record
Years represented: 2007
Publishing organizations appearing in records: Journal of animal science