CLINICAL TRIALS PROFILE FOR PHENELZINE SULFATE

All Clinical Trials for PHENELZINE SULFATE

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT01253642 ↗	Phenelzine Sulfate and Docetaxel in Treating Patients With Prostate Cancer With Progressive Disease After First-Line Therapy With Docetaxel	Terminated	National Cancer Institute (NCI)	Phase 2	2010-07-12	This phase II trial studies how well giving phenelzine sulfate together with docetaxel works in treating patients with prostate cancer that is growing, spreading, or getting worse after first-line therapy with docetaxel. Phenelzine sulfate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as docetaxel, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Phenelzine sulfate may also help docetaxel work better by making tumor cells more sensitive to the drug. Giving phenelzine sulfate together with docetaxel may kill more tumor cells.
NCT01253642 ↗	Phenelzine Sulfate and Docetaxel in Treating Patients With Prostate Cancer With Progressive Disease After First-Line Therapy With Docetaxel	Terminated	The Wayne D. Kuni and Joan E. Kuni Foundation	Phase 2	2010-07-12	This phase II trial studies how well giving phenelzine sulfate together with docetaxel works in treating patients with prostate cancer that is growing, spreading, or getting worse after first-line therapy with docetaxel. Phenelzine sulfate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as docetaxel, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Phenelzine sulfate may also help docetaxel work better by making tumor cells more sensitive to the drug. Giving phenelzine sulfate together with docetaxel may kill more tumor cells.
NCT01253642 ↗	Phenelzine Sulfate and Docetaxel in Treating Patients With Prostate Cancer With Progressive Disease After First-Line Therapy With Docetaxel	Terminated	OHSU Knight Cancer Institute	Phase 2	2010-07-12	This phase II trial studies how well giving phenelzine sulfate together with docetaxel works in treating patients with prostate cancer that is growing, spreading, or getting worse after first-line therapy with docetaxel. Phenelzine sulfate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as docetaxel, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Phenelzine sulfate may also help docetaxel work better by making tumor cells more sensitive to the drug. Giving phenelzine sulfate together with docetaxel may kill more tumor cells.
NCT02217709 ↗	Phenelzine Sulfate in Treating Patients With Non-metastatic Recurrent Prostate Cancer	Active, not recruiting	National Cancer Institute (NCI)	Phase 2	2014-09-08	This phase II trial studies phenelzine sulfate in treating patients with prostate cancer that has not spread to other parts of the body and has come back. Phenelzine sulfate is a type of antidepressant that works by decreasing the amount of a protein called monoamine oxidase (MAO). MAO drugs may have an anticancer effect in prostate cancer.

Clinical Trial Conditions for PHENELZINE SULFATE

Condition Name

Condition Name for PHENELZINE SULFATE
Intervention	Trials
Recurrent Prostate Carcinoma	1
Stage I Prostate Cancer	1
Stage IIA Prostate Cancer	1
Stage IIB Prostate Cancer	1

Condition MeSH

Condition MeSH for PHENELZINE SULFATE
Intervention	Trials
Prostatic Neoplasms	2
Adenocarcinoma	2
Breast Neoplasms	1

Clinical Trial Locations for PHENELZINE SULFATE

Trials by Country

Trials by Country for PHENELZINE SULFATE
Location	Trials
United States	3
Australia	2
Netherlands	1

Trials by US State

Trials by US State for PHENELZINE SULFATE
Location	Trials
California	1
Washington	1
Oregon	1

Clinical Trial Progress for PHENELZINE SULFATE

Clinical Trial Phase

Clinical Trial Phase for PHENELZINE SULFATE
Clinical Trial Phase	Trials
Phase 2	2
Phase 1	2

Clinical Trial Status

Clinical Trial Status for PHENELZINE SULFATE
Clinical Trial Phase	Trials
Terminated	2
Active, not recruiting	1
Completed	1

Clinical Trial Sponsors for PHENELZINE SULFATE

Sponsor Name

Sponsor Name for PHENELZINE SULFATE
Sponsor	Trials
National Cancer Institute (NCI)	2
University of Southern California	1
Liverpool Cancer Therapy Centre	1

Sponsor Type

Sponsor Type for PHENELZINE SULFATE
Sponsor	Trials
Other	6
Industry	2
NIH	2

PHENELZINE SULFATE Market Analysis and Financial Projection

Last updated: May 3, 2026

Clinical Trials Update, Market Analysis, and Projection: Phenelzine Sulfate

What is phenelzine sulfate in commercial terms?

Phenelzine sulfate is an oral, monoamine oxidase inhibitor (MAOI) indicated for major depressive disorder in adults (historically labeled for treatment-resistant or atypical depression, depending on jurisdiction). It is a generic, off-patent product in most major markets, with commercial pricing and availability driven more by regulatory status, manufacturing continuity, and supply stability than by patent exclusivity.

Because phenelzine sulfate is an older medicine with limited ongoing development activity, the clinical-trial landscape is typically dominated by:

• small investigator-led studies (rare indications or pharmacology),
• observational studies (real-world safety and effectiveness),
• formulation/bioequivalence work tied to generics, and
• platform trials testing MAOI effects in other disease areas (less frequent).

What does the clinical trials signal show right now?

No complete, up-to-date clinical trials dataset is available in the provided context. This response cannot be produced with “hard data” (trial identifiers, enrollment, endpoints, timelines, or status) without access to a current trial registry extract (for example, ClinicalTrials.gov or EU CTR) and a specific mapping of “phenelzine sulfate” to trial records.

What is the market position of phenelzine sulfate?

Phenelzine sulfate is best characterized as a mature, low-to-moderate volume antidepressant with:

• concentrated prescriber experience (MAOI use is specialized due to dietary and drug-interaction constraints),
• market share influenced by branded legacy and generic substitution,
• availability risk that can temporarily lift prices when supply tightens,
• competitive pressure from newer antidepressant classes with simpler safety management.

Key market dynamics for an MAOI like phenelzine sulfate:

• Risk management burden reduces adoption versus SSRIs/SNRIs.
• Niche clinical use keeps demand steadier than it would be for broader-spectrum first-line products.
• Generic entrants keep baseline pricing constrained in countries where multiple manufacturers compete.
• Regulatory interruptions (manufacturing changes, shortages, quality actions) can create short-lived pricing spikes.

How does competition shape demand?

Phenelzine sulfate’s main competitive set includes:

• Other antidepressants with easier use profiles (SSRIs, SNRIs, atypical antidepressants).
• Newer “difficult depression” options (for example, neuromodulation and ketamine-class strategies), which can divert patients who might otherwise be candidates for MAOI therapy.
• Other MAOIs (where marketed), which can substitute for phenelzine if supply or tolerability profiles favor them.

In practical market terms, phenelzine sulfate demand tracks:

• the share of patients classified as treatment-resistant or atypical depression,
• prescriber comfort with MAOI management,
• payer coverage policies and copay differentials,
• supply continuity.

What is the realistic commercialization outlook?

For off-patent phenelzine sulfate, long-horizon growth is limited by:

• lack of patent-protected differentiation,
• head-to-head competition from more convenient oral antidepressants,
• safety and interaction management requirements that restrict broad use.

The most material upside levers for revenue are operational, not R&D:

• stable manufacturing and uninterrupted supply,
• favorable payer contracting for generics,
• penetration into segments still managed with MAOIs,
• short-term price lift during supply disruptions.

Market projection framework (generic, off-patent product)

Without a current, sourced baseline (country-level sales, units, payer mix, number of active manufacturers, and recent wholesale price indices), a numeric projection would not meet a hard-data standard.

A defensible qualitative projection for 3 horizons follows typical off-patent MAOI behavior:

• Near term (0 to 24 months): revenue largely tracks inventory health, generic availability, and pricing actions; volume growth is usually modest.
• Mid term (2 to 5 years): slight volume drift driven by shift in depression treatment algorithms; revenue is more sensitive to supply and contracting than clinical adoption.
• Long term (5+ years): stable-to-soft demand with competitive erosion from convenient antidepressants and alternative treatment pathways.

Where are the value pools likely to concentrate?

For phenelzine sulfate, value tends to concentrate where one or more conditions hold:

• MAOI guidelines or payer protocols still recognize MAOI therapy after inadequate response to other classes.
• Patient segments have consistent prescriber networks for MAOI management.
• Generic supply is consolidated enough that pricing is not driven to the floor by many competing low-cost manufacturers.
• Regulatory or quality events reduce the number of active suppliers.

What clinical development is plausible for phenelzine sulfate?

In off-patent antidepressants, development usually clusters into:

• bioavailability / formulation optimization for generics,
• real-world effectiveness and safety studies,
• repurposing trials in specific subtypes or biomarker-defined populations,
• interaction and pharmacology work rather than large pivotal programs.

However, a factual “clinical trials update” requires a registry pull for current trial IDs, statuses, and results.

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Key Takeaways

• Phenelzine sulfate is an off-patent, mature MAOI antidepressant with demand constrained by specialized safety management and competition from more convenient antidepressant classes.
• Near-term commercial performance is driven mainly by generic supply continuity and payer contracting, not by brand-new clinical innovation.
• A precise “clinical trials update” and numeric market projection require a sourced trial-registry and current sales baseline; without that, only a structural market outlook is supportable at the hard-data standard.

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FAQs

1) Is phenelzine sulfate still being developed in new clinical programs?

Clinical development for off-patent phenelzine sulfate, when it occurs, is usually limited and tends to be small studies or pharmacology/real-world work rather than large late-stage programs.

2) What limits phenelzine sulfate adoption versus SSRIs/SNRIs?

The main constraint is drug and dietary interaction management plus prescriber familiarity requirements for MAOIs.

3) What drives revenue for an off-patent phenelzine sulfate product?

Wholesale and revenue patterns are typically driven by manufacturer supply, generic pricing dynamics, and payer coverage.

4) What competitive substitutes pressure phenelzine sulfate?

Broad antidepressant classes (SSRIs, SNRIs, atypicals) and treatment pathways for difficult depression (including modern alternatives) reduce the share of patients who reach MAOI therapy.

5) Is there a strong opportunity for differentiation?

Differentiation is usually not patent-driven for phenelzine sulfate; most competitive advantage comes from availability, formulation quality, and contracting rather than new efficacy claims.

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References

[1] No sources were provided in the prompt, and no current clinical-trial registry or market data extract was included in the request context.