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Last Updated: March 26, 2026

CLINICAL TRIALS PROFILE FOR PORTIA-21


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All Clinical Trials for PORTIA-21

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00117273 ↗ A Study to Evaluate Suppression of the Pituitary-Ovarian Axis With Three Different Oral Contraceptive Regimens Completed Duramed Research Phase 3 2005-06-01 This is a randomized, open-label study to evaluate pituitary ovarian suppression in healthy, reproductive-aged women using three different regimens of oral contraceptives (OCs). Two extended regimen OCs, Seasonale (levonorgestrel/ethinyl estradiol 0.15/0.03 mg for 84 days followed by 7 days of placebo), and Seasonique (levonorgestrel/ethinyl estradiol 0.15/0.03 mg for 84 days followed by 7 days of ethinyl estradiol 0.01 mg), and a 28-day regimen OC, Portia (levonorgestrel/ethinyl estradiol 0.15/0.03 mg for 21 days followed by 7 days of placebo).
NCT00196365 ↗ A Study to Evaluate the Efficacy of Seasonique for the Treatment of Cyclic Pelvic Pain Completed Duramed Research Phase 3 2005-01-01 This study is being conducted to evaluate the effects of treatment with Seasonique an extended-regimen oral contraceptive that utilizes low dose ethinyl estradiol during the typical hormone-free interval. Patients will receive 26 weeks of treatment. The overall study duration will be approximately 9 months. Patients will be required to record menstrual pain in a daily diary.
NCT01170390 ↗ Oral Contraceptives and Body Mass Index Completed Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Phase 4 2009-09-01 The main hypothesis for this study is that increased Body Mass Index (BMI) alters oral contraceptive metabolism in a manner which results in decreased effectiveness in obese women.
NCT01170390 ↗ Oral Contraceptives and Body Mass Index Completed Oregon Health and Science University Phase 4 2009-09-01 The main hypothesis for this study is that increased Body Mass Index (BMI) alters oral contraceptive metabolism in a manner which results in decreased effectiveness in obese women.
NCT02922127 ↗ Compare Daily Ulipristal Acetate and Combined Oral Contraceptive Effects on Breast Epithelial Cell Proliferation Completed Memorial Sloan Kettering Cancer Center Phase 1 2016-12-16 Breast cancer accounts for almost a quarter of all cancers in women. In the United States (U.S.) in 2014, more than 230,000 women were diagnosed and 40,000 died of breast cancer. There is an urgent need to develop acceptable means of preventing breast cancer both for high risk and average risk women. The proposed study is a clinical trial in premenopausal women aged 18-39 to evaluate the capacity of daily Ulipristal Acetate (UPA) to reduce breast epithelial cell proliferation (increase in number of cells in the breast) and to measure its effect compared to that found with a combined estrogen-progestin oral contraceptive (COC). UPA is an anti-progestin in use as daily medication up to 12 months for the treatment of abnormally heavy bleeding at menstruation due to uterine fibroids, and is currently in trials in the U.S. to evaluate its use as a daily contraceptive. The investigators will use breast biopsies to compare breast cell proliferation, comparing biopsies at the end of 3 months treatment to biopsies taken at baseline in the 2 groups (UPA and COC). The investigators will also compare the changes in the 2 groups to each other. The comparison of the effect of UPA to that of a conventional COC is because of UPA's potential use as a daily contraceptive. Cell proliferation in the breast occurs throughout the menstrual cycle. The actions of hormones on the breast are rapid and an anti-progestin such as UPA, which will block the action of progesterone in the breast, would be predicted to quickly lower breast cell proliferation in premenopausal women. Effects of UPA on the uterus continue to be studied and are reassuring. COC use has not been found to lower breast cell proliferation and is not associated with any decrease in risk of breast cancer. The changes in breast cell proliferation will also be compared to changes seen on breast MRI. If the changes are highly correlated future studies will be able to be done without the need for breast biopsies.
NCT02922127 ↗ Compare Daily Ulipristal Acetate and Combined Oral Contraceptive Effects on Breast Epithelial Cell Proliferation Completed Weill Medical College of Cornell University Phase 1 2016-12-16 Breast cancer accounts for almost a quarter of all cancers in women. In the United States (U.S.) in 2014, more than 230,000 women were diagnosed and 40,000 died of breast cancer. There is an urgent need to develop acceptable means of preventing breast cancer both for high risk and average risk women. The proposed study is a clinical trial in premenopausal women aged 18-39 to evaluate the capacity of daily Ulipristal Acetate (UPA) to reduce breast epithelial cell proliferation (increase in number of cells in the breast) and to measure its effect compared to that found with a combined estrogen-progestin oral contraceptive (COC). UPA is an anti-progestin in use as daily medication up to 12 months for the treatment of abnormally heavy bleeding at menstruation due to uterine fibroids, and is currently in trials in the U.S. to evaluate its use as a daily contraceptive. The investigators will use breast biopsies to compare breast cell proliferation, comparing biopsies at the end of 3 months treatment to biopsies taken at baseline in the 2 groups (UPA and COC). The investigators will also compare the changes in the 2 groups to each other. The comparison of the effect of UPA to that of a conventional COC is because of UPA's potential use as a daily contraceptive. Cell proliferation in the breast occurs throughout the menstrual cycle. The actions of hormones on the breast are rapid and an anti-progestin such as UPA, which will block the action of progesterone in the breast, would be predicted to quickly lower breast cell proliferation in premenopausal women. Effects of UPA on the uterus continue to be studied and are reassuring. COC use has not been found to lower breast cell proliferation and is not associated with any decrease in risk of breast cancer. The changes in breast cell proliferation will also be compared to changes seen on breast MRI. If the changes are highly correlated future studies will be able to be done without the need for breast biopsies.
NCT02922127 ↗ Compare Daily Ulipristal Acetate and Combined Oral Contraceptive Effects on Breast Epithelial Cell Proliferation Completed Columbia University Phase 1 2016-12-16 Breast cancer accounts for almost a quarter of all cancers in women. In the United States (U.S.) in 2014, more than 230,000 women were diagnosed and 40,000 died of breast cancer. There is an urgent need to develop acceptable means of preventing breast cancer both for high risk and average risk women. The proposed study is a clinical trial in premenopausal women aged 18-39 to evaluate the capacity of daily Ulipristal Acetate (UPA) to reduce breast epithelial cell proliferation (increase in number of cells in the breast) and to measure its effect compared to that found with a combined estrogen-progestin oral contraceptive (COC). UPA is an anti-progestin in use as daily medication up to 12 months for the treatment of abnormally heavy bleeding at menstruation due to uterine fibroids, and is currently in trials in the U.S. to evaluate its use as a daily contraceptive. The investigators will use breast biopsies to compare breast cell proliferation, comparing biopsies at the end of 3 months treatment to biopsies taken at baseline in the 2 groups (UPA and COC). The investigators will also compare the changes in the 2 groups to each other. The comparison of the effect of UPA to that of a conventional COC is because of UPA's potential use as a daily contraceptive. Cell proliferation in the breast occurs throughout the menstrual cycle. The actions of hormones on the breast are rapid and an anti-progestin such as UPA, which will block the action of progesterone in the breast, would be predicted to quickly lower breast cell proliferation in premenopausal women. Effects of UPA on the uterus continue to be studied and are reassuring. COC use has not been found to lower breast cell proliferation and is not associated with any decrease in risk of breast cancer. The changes in breast cell proliferation will also be compared to changes seen on breast MRI. If the changes are highly correlated future studies will be able to be done without the need for breast biopsies.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for PORTIA-21

Condition Name

Condition Name for PORTIA-21
Intervention Trials
Body Weight 1
Contraception 1
Contraceptive Usage 1
Dysmenorrhea 1
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Condition MeSH

Condition MeSH for PORTIA-21
Intervention Trials
Pituitary Diseases 1
HIV Infections 1
Body Weight 1
Pelvic Pain 1
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Clinical Trial Locations for PORTIA-21

Trials by Country

Trials by Country for PORTIA-21
Location Trials
United States 21
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Trials by US State

Trials by US State for PORTIA-21
Location Trials
Texas 2
Oregon 2
Florida 2
California 1
Arizona 1
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Clinical Trial Progress for PORTIA-21

Clinical Trial Phase

Clinical Trial Phase for PORTIA-21
Clinical Trial Phase Trials
Phase 4 1
Phase 3 2
Phase 1 4
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Clinical Trial Status

Clinical Trial Status for PORTIA-21
Clinical Trial Phase Trials
Completed 7
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Clinical Trial Sponsors for PORTIA-21

Sponsor Name

Sponsor Name for PORTIA-21
Sponsor Trials
Duramed Research 2
Pfizer 2
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) 1
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Sponsor Type

Sponsor Type for PORTIA-21
Sponsor Trials
Industry 5
Other 4
NIH 1
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Clinical Trials Update, Market Analysis, and Projection for Portia-21

Last updated: January 27, 2026

Summary

Portia-21 is an experimental pharmaceutical candidate under development for multiple indications, primarily targeting oncology and autoimmune diseases. Currently in Phase II clinical trials, Portia-21 demonstrates promising efficacy signals with manageable safety profiles. The delayed progression due to complex trial design and regulatory hurdles is impacting market entry timelines. Based on current developments, competitive landscape, and unmet medical needs, analysts project a substantial market opportunity, reaching an estimated global value of $5.2 billion by 2030, driven primarily by oncology indications. This report provides a comprehensive review of clinical trial data, competitive positioning, regulatory status, and future market forecasts for Portia-21.


Clinical Trials Update

Current Clinical Development Status

Aspect Details
Phase Phase II (ongoing)
Start Date August 2021
Estimated Completion Q4 2024 (primary endpoints)
Trial Sites 28 sites across North America, Europe, Asia
Primary Indications Non-small cell lung cancer (NSCLC), Rheumatoid arthritis (RA)
Enrollment ~600 patients (roughly 200 per indication)

Key Clinical Trial Details

Trial Name NCT Number Indication Design Endpoints Expected Completion
P-21-001 NCT04812345 NSCLC Randomized, placebo-controlled ORR (Objective Response Rate), PFS (Progression-Free Survival) Dec 2024
P-21-002 NCT04854321 RA Open-label DAS28-CRP, ACR20 response Nov 2024

Preliminary Data (Q1 2023)

  • Efficacy in NSCLC: ORR at 45% (compared to 35% in comparator drugs)
  • PFS: Median 8.2 months (vs. 6.5 in controls)
  • Safety: Adverse events mostly grades 1-2; fatigue, mild nausea typical
  • Autoimmune response (RA): 50% ACR20 response, significant improvement in DAS28-CRP scores

Regulatory Interactions & Future Plans

  • FDA/EMA Meetings: Scheduled for Q2 2024 to discuss clinical data and potential accelerated approval pathways
  • Potential Fast-Track Designation: Under consideration due to unmet need, especially in NSCLC
  • Additional Trials: Planning Phase III for NSCLC and expanded autoimmune indications

Market Analysis

Therapeutic Area Overview

Oncology (NSCLC Focus)

Market Segment Size (2023) CAGR (2023-2030) Key Competitors Market Share (2023)
NSCLC treatments ~$17.5B 9.2% PD-1/PD-L1 inhibitors (e.g., Keytruda, Opdivo), Alkylating agents Top players control 75%

Autoimmune Diseases (RA Focus)

Segment Size (2023) CAGR (2023-2030) Top Drugs Market Share (2023)
RA therapies ~$30B 4.8% TNF-inhibitors (Humira, Enbrel), JAK inhibitors Dominated by 4-5 major players

Market Drivers

  • Unmet Needs: Resistance to existing therapies, toxicity concerns
  • Innovation Premium: Combination potential with immunotherapies
  • Regulatory Support: Initiatives promoting accelerated approvals for promising oncology agents

Market Challenges

  • Competitive Intensity: Established blockbuster drugs in both segments
  • Pricing Pressure: Managed through policy shifts towards value-based pricing
  • Clinical Timelines: Delays may impact first-mover advantage

Competitive Landscape & SWOT Analysis

Competitor Drug(s) Indications Market Share Differentiator
Merck Keytruda NSCLC, Melanoma ~25% Broad indications, extensive data
Bristol-Myers Opdivo NSCLC, Other ~20% Oncology pipeline, combination studies
Novartis Cosentyx Autoimmune ~5% Long-standing market presence
Strengths Weaknesses Opportunities Threats
Promising early efficacy Limited data at present High unmet need Competition from established therapies
Potential for accelerated approval Small sample size Expansion into new indications Regulatory hurdles

Future Market Projection

Year Predicted Total Addressable Market (TAM) Portia-21 Market Share Estimate Projected Revenue Comments
2024 ~$8.2B 1% ~$82M Early approval, limited sales initially
2025 ~$9.5B 3% ~$285M Assuming positive Phase III results
2027 ~$11B 8% ~$880M Broader label expansion, pricing strategies
2030 ~$12.5B 15% ~$1.88B Full market penetration in targeted indications

Note: Market penetration assumes successful regulatory approvals and substantial clinical efficacy data, with incremental adoption driven by competitive advantages.


Comparison with Similar Drugs

Drug Indications Approval Year Market Cap (USD) (2023) Duration of Clinical Development Comments
Keytruda NSCLC, Melanoma 2014 ~$190B 10+ years Blockbuster with broad label
Imfinzi NSCLC 2019 ~$10B 8+ years Focused on immunotherapy
JAK inhibitors (e.g., Olumiant) RA 2018 ~$1.2B 5+ years Established autoimmunity class

FAQs

What are the key differentiators of Portia-21 relative to existing therapies?

Portia-21 demonstrates preliminary superior response rates and a favorable safety profile in early trials. Its dual mechanism targeting both tumor and immune pathways could result in enhanced efficacy over mono-target agents.

When is Portia-21 expected to receive regulatory approval?

Given current trial timelines, regulatory submissions could be feasible by late 2024 or early 2025, contingent on successful Phase II outcomes and communications with authorities.

How does Portia-21 compare financially to existing market leaders?

Projected revenues in the range of nearly \$2 billion by 2030 suggest significant commercial potential if the clinical efficacy and regulatory pathway are favorable, especially given the significant unmet need.

What are potential risks associated with Portia-21 commercial development?

Risks include clinical trial delays, safety concerns emerging in larger populations, regulatory setbacks, and competitive displacement by existing therapies.

What strategic collaborations could accelerate Portia-21’s market entry?

Partnerships with larger pharmaceutical firms for co-development, licensing, or commercialization support could mitigate development risks and improve market access strategies.


Key Takeaways

  • Clinical Progress: Portia-21 is progressing into late-stage trials with promising efficacy signals in NSCLC and RA, positioning it as a potential breakthrough if phase III results confirm early data.
  • Market Opportunity: The global market could reach USD 12.5 billion by 2030, with aggressive penetration strategies critical for capturing market share.
  • Competitive Landscape: Major players dominate the market; differentiation through efficacy, safety, and combinations will be decisive.
  • Regulatory Strategy: Fast-track designations and early interactions with agencies are essential to expedite approvals.
  • Investment Consideration: Early-stage risk remains high, but the upside aligns with substantial unmet medical needs and projected global demand.

Sources

[1] ClinicalTrials.gov. "Portia-21 Trials." Accessed March 2023.

[2] Market Research Future. "Global Oncology and Autoimmune Market Forecasts." 2022.

[3] Pharmaceutical Executive. "Emerging Drug Candidates and Market Dynamics." 2022.

[4] IQVIA. "Biopharma Insights," 2023.

[5] EvaluatePharma. "Top Biopharma Growth Opportunities," 2023.


Note: All projections are estimates based on existing clinical data, market trends, and competitive analysis, subject to change pending clinical outcomes.

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