In PepBank now:147 peptides, 6 blends and 13 other compounds97,577 study results from 17,383 studies8,473 clinical trialsUpdated
Comparing 2 peptides · Data version 308560
Swipe sideways to see every peptide.
| Peptide | Natural peptide Prothymosin alpha (human) | Natural fragment Thymosin alpha-1 | |
|---|---|---|---|
| Identity | |||
| Kind | Natural peptide | Natural fragment | |
| Area | Immune and antimicrobial | Immune and antimicrobial | |
| Evidence | |||
| Amount of evidence | No results yet | 1,450 (plus 251 on natural levels, listed separately) | |
| Evidence level | No study results | Has results from studies in people | |
| Safety | |||
| Safety results | No safety results | 54 (45 in people) | |
| Status | |||
| Approval | |||
| Sport (WADA) | |||
| Registered trials | None registered | 56 · 13 active9 more mention it but do not test it | |
From the regulatory data of each peptide.
The sources we use show no clinical development. They show no approval at the FDA, the EMA or elsewhere (as of 8 Oct 2026).
Outcome groups with study results for at least two of these peptides. Counts include only results from studies that gave the peptide. Bar length is the number of results, on one scale. The bars show how much was studied, not how large an effect was. A peptide with more studies can look stronger here without being stronger. For results, see the randomized results above.
No outcome group has study results for two or more of these peptides.
PepBank is a research reference. Talk to a doctor before you use any peptide.
No FDA approval and no central EU authorisation (EMA).
Each analog against its native parent, residue by residue. Substitutions, non-standard residues and modifications are marked. Calculated from the two sequences.
Thymosin alpha-1 is the same as Prothymosin alpha (human) residues 2 to 29, with 1 added group.
What is different
For each outcome that two or more peptides have results for: the best result of a single randomized trial, on the same measure (the same kind of number, the same unit). When a trial has several dose arms, the cell shows the highest dose arm. The trials differ in people, length and dose, so a gap between two cells is not proof that one peptide works better.
No outcome has a randomized-trial result on the same measure for two or more of these peptides yet.
Registered trials, ranked by phase (late phases first), then posted results and enrollment. Status is the registry status. Study results come from published studies. Results posted at ClinicalTrials.gov are shown on each trial page.
No registered trial that tests Prothymosin alpha (human) found in ClinicalTrials.gov.
Top 3 of 56 trials, ranked by phase, then posted results and enrollment: 1 ongoing · 1 completed · source ClinicalTrials.gov (opens in a new tab)
Shanghai Jiao Tong University School of Medicine2,944 participants21 Jan 2020 to est. Jun 2020
2019 Novel Coronavirus Infection
Fudan University2,500 participants1 Apr 2021 to est. 31 Mar 2027
Stage II Colorectal Cancer · Stage III Colorectal Cancer
Sun Yat-sen University1,106 participants6 Sept 2016 to 23 Mar 2021
Sepsis
9 more mention it but do not test it. They only measure it or name it in their text.