Last Updated: June 10, 2026

Investigational Drug Information for Aplindore


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What is the development status for investigational drug Aplindore?

Aplindore is an investigational drug.

There have been 4 clinical trials for Aplindore. The most recent clinical trial was a Phase 2 trial, which was initiated on December 1st 2008.

The most common disease conditions in clinical trials are Syndrome, Restless Legs Syndrome, and Psychomotor Agitation. The leading clinical trial sponsors are Ligand Pharmaceuticals, Neurogen Corporation, and [disabled in preview].

Recent Clinical Trials for Aplindore
TitleSponsorPhase
Efficacy and Safety Study of Aplindore in Patients With Restless Legs SyndromeNeurogen CorporationPhase 2
Efficacy and Safety Study of Aplindore in Patients With Early Parkinson DiseaseNeurogen CorporationPhase 2
The Effects of Aplindore on the Treatment of Signs and Symptoms of Restless Legs SyndromeLigand PharmaceuticalsPhase 2

See all Aplindore clinical trials

Clinical Trial Summary for Aplindore

Top disease conditions for Aplindore
Top clinical trial sponsors for Aplindore

See all Aplindore clinical trials

Last updated: February 15, 2026

What is the current development status of Aplindore?

Aplindore is an investigational drug developed for Parkinson’s disease and other neuropsychiatric disorders. It acts as a selective dopamine receptor D2 and D1 partial agonist. Its development has experienced delays due to various factors, including preclinical and early clinical setbacks.

Clinical Trials and Development Timeline:

  • Phase 1 trials concluded around 2014, demonstrating acceptable safety and pharmacokinetics in healthy volunteers.
  • Phase 2 trials were initiated between 2015 and 2017 to assess efficacy in Parkinson’s disease patients.
  • As of 2023, there is no public record of Phase 3 initiation, indicating a possible pause or discontinuation in advanced clinical testing.

Partnerships and Corporate Activities:

  • The drug has been associated with Takeda Pharmaceutical, which collaborated on early development phases.
  • No recent licensing agreements or acquisitions have been publicly announced since 2018, suggesting limited recent corporate activity around Aplindore.

Regulatory Status:

  • No ongoing submissions or approvals reported with the FDA or EMA.
  • No orphan drug designation or breakthrough therapy status confirmed.

How does Aplindore compare with other dopamine receptor agents?

Parameter Aplindore Typical D2/D1 partial agonists Approved Parkinson’s Drugs
Mechanism Selective D1/D2 partial agonist Varies; includes dopamine agonists like pramipexole Dopamine precursors, receptor agonists
Development Stage Experimental; Phase 2 possibly incomplete Several approved drugs Fully approved, marketed
Safety Profile Data limited; phase 1 showed acceptable safety Known side effects include dyskinesia, psychiatric effects Established, with well-characterized safety profiles
Efficacy Data limited; inconclusive Varies by drug; generally effective Proven in large trials

Compared to marketed therapies, Aplindore remains experimental with limited clinical data supporting efficacy or safety.

What are the market prospects for Aplindore?

Market Overview:

  • Parkinson’s disease affects over 10 million globally, projected to reach 12 million by 2030.
  • The global Parkinson’s therapy market was valued at approximately $4 billion in 2022 and is expected to grow at a CAGR of 6% through 2030.

Unmet Needs and Competitive Landscape:

  • Existing treatments primarily address motor symptoms but have significant side effects such as dyskinesia and psychiatric disturbances.
  • New agents with improved safety profiles and symptom control are in demand.
  • Several drugs in late-stage development, such as obiective dopamine agonists or α-synuclein antivirals, threaten approval of new entrants.

Market Entry Barriers for Aplindore:

  • Lack of completed Phase 3 data limits commercialization prospects.
  • Competition from well-established agents reduces flexibility.
  • Regulatory uncertainties compound risk.

Potential Commercial Value:

  • If Aplindore advances successfully, it could target niche patient subsets intolerant to current therapies.
  • A novel mechanism might serve as an adjunct therapy, potentially capturing a segment of the expanding market.

Investment and R&D Outlook:

  • Clinical development costs for Parkinson’s drugs average around $500 million per successful product.
  • With limited recent activity, further investment relies on positive Phase 2 results or reactivating development plans.

What are the key regulatory and strategic challenges?

  • The absence of recent clinical trial data raises questions about the drug’s safety and efficacy.
  • Securing regulatory approvals would require successful full-phase trials demonstrating clear benefits over existing therapies.
  • Strategic partnerships are crucial. Without them, funding and development progression become difficult.
  • Potential early-stage lack of clinical efficacy or safety issues could lead to discontinuation.

What is the future outlook for Aplindore?

  • Development is uncertain; no recent public indications of ongoing trials.
  • Success depends heavily on positive Phase 2 outcomes, if they exist.
  • Market entry would require significant investment and favorable regulatory review.

Key Takeaways

  • Aplindore is an experimental dopamine receptor partial agonist with limited recent clinical activity.
  • No completed Phase 3 trials and no recent regulatory filings suggest development stagnation.
  • The drug faces fierce competition from approved therapies and late-stage pipeline candidates.
  • Unmet needs in Parkinson’s offer some market upside if future trials confirm efficacy and safety.
  • Continued investment hinges on positive early-phase data and strategic partnerships.

FAQs

1. Is Aplindore currently in clinical trials?
No, there are no publicly available records indicating ongoing clinical trials for Aplindore as of 2023.

2. What are the main challenges preventing Aplindore’s commercialization?
Key challenges include limited clinical data, no recent trial progress, competition, and regulatory uncertainty.

3. Could Aplindore become a market competitor if revived?
Potentially, if it demonstrates superior efficacy or safety profiles, but significant clinical and regulatory hurdles remain.

4. What is the timeline for future development?
Without active development or announced plans, timelines are speculative. Restarting clinical trials would typically require at least 2-3 years.

5. How does the market view drugs like Aplindore?
Investors and industry stakeholders view such candidates as high-risk, high-reward opportunities limited by prior development setbacks and competitive pressures.


Sources:

[1] ClinicalTrials.gov. Search for Aplindore trials. [2] Global Parkinson’s Disease Pipeline Reports, 2023. [3] Pharma industry reports, 2022. [4] FDA and EMA regulatory databases, 2023.

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