Plitidepsin

Also known as: Aplidin · dehydrodidemnin B

Not FDA-approved

Last verified: October 30, 2026

At a glance

FDA approval Not FDA-approved No record in Drugs@FDA
Randomized controlled trials 6 of 172 publications on PubMed
Registered clinical trials 16 0 active
Adverse event reports 16 14 classified as serious
  • Plitidepsin is not an FDA-approved drug: Drugs@FDA has no record of it.
  • PubMed lists 172 publications mentioning it, including 6 randomized controlled trials and 15 animal-only studies.
  • ClinicalTrials.gov lists 16 registered studies testing it (0 active).
  • FDA's adverse event system (FAERS) holds 16 reports mentioning it; 14 classified as serious. Reports do not prove causation.

Research topics

  • Depsipeptides 116
  • Peptides, Cyclic 103
  • Antineoplastic Agents 76
  • Neoplasms 32
  • Apoptosis 23
  • Antiviral Agents 20
  • SARS-CoV-2 20
  • Peptide Elongation Factor 1 17
  • Antineoplastic Combined Chemotherapy Protocols 15
  • COVID-19 14

Most frequent MeSH subject headings in the latest PubMed records (English, as indexed).

Regulatory status

Drugs@FDA applications

No application found in Drugs@FDA, FDA's database of approved drugs.

Source: Drugs@FDA (openFDA) · verified October 30, 2026 · API query

FDA compounding safety list

Not on FDA's list of bulk drug substances that may present significant safety risks in compounding.

Source: FDA.gov — Category 2 bulk drug substances · verified October 30, 2026

Removal of a substance from a regulatory list does not mean it has been approved. A "research use only" label does not make a product safe or legal for human use.

Scientific publications

  • All publications 172
  • Human (MeSH) 127
  • Animal only 15
  • Clinical trials 24
  • Randomized controlled trials 6
  • Systematic reviews & meta-analyses 1
  • Case reports 4
  • Retracted 0

Counts are PubMed records that mention the peptide in the title or abstract. Categories overlap, and a mention is not the same as testing the peptide as a treatment. Each number opens the exact PubMed search. Effects seen in laboratory or animal studies may not occur in humans. A registered clinical trial does not show that a substance is effective or safe.

Latest publications

Source: PubMed (NCBI) · verified October 30, 2026

Clinical trials

Registered
16
Active
0
With posted results
14

Conditions studied

  • Multiple Myeloma 3
  • COVID-19 2
  • COVID-19 Infection 2
  • Lymphoma 2
  • Post COVID-19 Condition 1
  • Long COVID Syndrome 1
  • Persistent COVID-19 1
  • Persistent COVID Condition 1
  • Long COVID 1
  • Adult Patients With Unresectable Locally Advanced or Metastatic, Relapsed/Refractory Dedifferentiated Liposarcoma 1
  • Myelofibrosis 1
  • Relapsed/Refractory Multiple Myeloma 1
Study Status Phase Start
Study to Evaluate the Efficacy and Safety of Plitidepsin in Adults With Post-COVID-19 Condition (PCC)
NCT06766825 Fundación FLS de Lucha Contra el Sida, las Enfermedades Infecciosas y la Promoción de la Salud y la Ciencia
Completed Phase 2 February 7, 2025
Plitidepsin Versus Control in Immunocompromised Adult Participants With Symptomatic COVID-19 Requiring Hospital Care (NEREIDA)
NCT05705167 PharmaMar Results posted
Terminated Phase 2 April 19, 2023
Extension Study in a Cohort of Adult Patients With COVID-19 Infection
NCT05121740 PharmaMar Results posted
Completed Phase 1, Phase 2 January 25, 2022
Trial to Determine the Efficacy/Safety of Plitidepsin vs Control in Patients With Moderate COVID-19 Infection
NCT04784559 PharmaMar Results posted
Terminated Phase 3 June 4, 2021
Proof of Concept Study to Evaluate the Safety Profile of Plitidepsin in Patients With COVID-19
NCT04382066 PharmaMar Results posted
Completed Phase 1 May 12, 2020
Trial of Plitidepsin (Aplidin®) in Combination With Bortezomib and Dexamethasone in Multiple Myeloma Patients Double Refractory to Bortezomib and Lenalidomide
NCT03117361 PharmaMar Results posted
Terminated Phase 2 May 8, 2017
A Study of Plitidepsin in Patients With Relapsed or Refractory Angioimmunoblastic T-cell Lymphoma
NCT03070964 PharmaMar Results posted
Terminated Phase 2 October 25, 2016
Study of Plitidepsin (Aplidin®) in Combination With Bortezomib and Dexamethasone in Patients With Multiple Myeloma
NCT02100657 PharmaMar Results posted
Completed Phase 1 Jun 2014
Efficacy and Safety of Plitidepsin in Patients With Advanced Unresectable or Metastatic, Relapsed/Refractory, Dedifferentiated Liposarcoma (DLPS): an Exploratory Phase II Multicenter Trial
NCT01876043 Institut Bergonié Results posted
Terminated Phase 2 Feb 2012
Clinical Trial of Aplidin® in Patients With Primary Myelofibrosis
NCT01149681 PharmaMar Results posted
Completed Phase 2 Jul 2010
Show 6 more studies
Study Status Phase Start
Aplidin - Dexamethasone in Relapsed/Refractory Myeloma
NCT01102426 PharmaMar Results posted
Completed Phase 3 Jun 2010
Study of Plitidepsin in Combination With Sorafenib or Gemcitabine in Patients With Advanced Solid Tumors or Lymphomas
NCT00788099 PharmaMar
Completed Phase 1 Dec 2008
Clinical Study of Plitidepsin (Aplidin®) in Combination With Cytarabine in Patients With Relapsed/Refractory Leukemia
NCT00780143 PharmaMar Results posted
Terminated Phase 1, Phase 2 Nov 2007
A Study of Aplidin (Plitidepsin) 3 h iv in Subjects With Relapsing or Refractory Multiple Myeloma
NCT00229203 PharmaMar Results posted
Completed Phase 2 Feb 2005
A Study of Aplidin ( Plitidepsin) in Subjects With Advanced Prostate Cancer
NCT00780975 PharmaMar Results posted
Terminated Phase 2 Feb 2005
Multicenter Trial to Treat Patients With Relapsed/Refractory Aggressive Non Hodgkin Lymphoma
NCT00884286 PharmaMar Results posted
Completed Phase 2 Dec 2004

All 16 studies on ClinicalTrials.gov ↗

Source: ClinicalTrials.gov · verified October 30, 2026

Adverse event reports

Reports
16
Serious
14
With death outcome
1

Most reported reactions

  • Off label use 5
  • Covid-19 4
  • Condition aggravated 2
  • Covid-19 pneumonia 2
  • Fatigue 2
  • Plasma cell myeloma 2
  • Vomiting 2
  • Acute kidney injury 1
  • Chest pain 1
  • Dehydration 1
  • Liver function test abnormal 1
  • Lymphopenia 1

Adverse event reports do not prove that the substance caused these effects. Side effects not listed here may still occur. Reaction terms are MedDRA terms as reported to FAERS.

Source: FDA FAERS (FAERS data as of July 30, 2026) · verified October 30, 2026 · API query

Change history

No changes since monitoring began on October 30, 2026.