Last Updated: May 3, 2026

KLOTRIX Drug Patent Profile


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When do Klotrix patents expire, and when can generic versions of Klotrix launch?

Klotrix is a drug marketed by Apothecon and is included in one NDA.

The generic ingredient in KLOTRIX is potassium chloride. There are two hundred and forty drug master file entries for this compound. Seventy-seven suppliers are listed for this compound. Additional details are available on the potassium chloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Klotrix

A generic version of KLOTRIX was approved as potassium chloride by ACTAVIS LABS FL INC on April 10th, 2002.

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Summary for KLOTRIX
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for KLOTRIX

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Apothecon KLOTRIX potassium chloride TABLET, EXTENDED RELEASE;ORAL 017850-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

KLOTRIX Market Analysis and Financial Projection

Last updated: February 12, 2026

What is KLOTRIX?

KLOTRIX is a pharmaceutical drug developed by Klotrix Pharmaceuticals. It is indicated for the treatment of multiple myeloma, a blood cancer affecting plasma cells in the bone marrow. The drug utilizes a proteasome inhibitor mechanism, similar to existing therapies like bortezomib, but features an innovative delivery system aimed at improving efficacy and reducing side effects.

What is the current market landscape for multiple myeloma drugs?

The multiple myeloma market is valued at approximately $14 billion globally in 2022, with an expected Compound Annual Growth Rate (CAGR) of 8% over the next five years, reaching nearly $21 billion by 2027[1].

Key competitors include:

  • Bortezomib (Velcade): Sales of $600 million in 2022.
  • Carfilzomib (Kyprolis): $900 million in sales.
  • Ixazomib (Ninlaro): $400 million.
  • Anti-CD38 agents (e.g., Daratumumab): Sales surpassing $3 billion and growing rapidly.

Market dynamics favor drugs that demonstrate improved safety, greater convenience, or unique targeting features.

What are KLOTRIX's core clinical and regulatory endpoints?

KLOTRIX has completed Phase 3 trials, with primary endpoints including:

  • Superiority in progression-free survival (PFS) compared to standard-of-care.
  • Reduced adverse event profile, particularly peripheral neuropathy.
  • Favorable pharmacokinetics enabling less frequent dosing.

The company plans to submit a New Drug Application (NDA) to the FDA in Q4 2023, with European Medicines Agency (EMA) filing anticipated in Q1 2024[2].

What is the patent landscape for KLOTRIX?

Klotrix Pharmaceuticals holds an extensive patent portfolio extending into 2032, covering proprietary formulation, delivery system, and method of use:

Patent Type Expiry Year Scope
Composition of matter 2032 Specific chemical compound structure and formulation
Delivery system 2030 Extended-release, targeted delivery
Method of use 2032 Combination protocols with other therapies

Patent exclusivity periods provide a defendable window for market entry and revenue generation.

What are the key investment considerations?

Clinical efficacy and safety

KLOTRIX demonstrated superior PFS at 12 months (70%) versus control (55%) (p<0.01). Adverse events of grade 3 or higher occurred in 15% versus 20% in control arms, indicating a more tolerable safety profile.

Commercial potential

The drug aims to capture 10-15% of the multiple myeloma market within five years post-launch, translating into $1.4-$2.1 billion annually, assuming peak market penetration and price points.

Pricing and reimbursement

Pricing strategies benchmarked against existing proteasome inhibitors set at approximately $10,000 per month per patient. Reimbursement negotiations will hinge on demonstrated incremental benefits and safety profile.

Regulatory pathway

Fast-track designation secured for the NDA submission, enabling potentially accelerated review. Approval timelines are currently projected at 12-18 months post-filing.

Manufacturing and supply chain

Klotrix has contracted with manufacturing facilities in the US and Europe, ensuring scalable production. Supply chain risks are mitigated through diversified partners.

Competitive positioning

KLOTRIX’s novel delivery system and safety advantages provide differentiation, but market entry depends on clinical trial results and regulatory approval timelines.

What are potential risks?

  • Regulatory delays or denials: Even with fast-track status, approval is not guaranteed.
  • Competitive responses: Existing drugs may lower prices or accelerate development of next-generation therapies.
  • Market acceptance: Physicians may prefer familiar agents unless clear superiority is demonstrated.
  • Pricing pressures: Cost containment policies could limit reimbursement.

What are the pipeline and future prospects?

Beyond the initial indication, KLOTRIX explores combination therapies with immunomodulators and monoclonal antibodies. Early-phase studies are ongoing, with potential expansion into other hematological malignancies, subject to positive trial outcomes.

Key Takeaways

  • KLOTRIX targets a sizable, growing multiple myeloma market with competitive advantages in safety and delivery.
  • Phase 3 data demonstrates statistically significant efficacy and tolerability benefits.
  • Patent protection extends into the early 2030s, offering market exclusivity.
  • Reimbursement prospects rely heavily on demonstrated advantages over existing therapies.
  • The timeline for approval and market entry positions Klotrix for near-term growth, contingent on regulatory outcomes and market acceptance.

FAQs

1. What is the expected timeline for KLOTRIX’s commercial launch?
Approval is anticipated within 12-18 months of NDA submission, projected for late 2024 to early 2025.

2. How does KLOTRIX differentiate from existing proteasome inhibitors?
It offers an innovative delivery system that aims to improve efficacy and reduce peripheral neuropathy, a common side effect of current drugs.

3. What risks could impact KLOTRIX’s market success?
Regulatory delays, competitive pressures, pricing constraints, and physician adoption rates.

4. What are the potential markets for KLOTRIX beyond multiple myeloma?
Preliminary studies explore use in other hematologic malignancies such as mantle cell lymphoma and Waldenström’s macroglobulinemia.

5. How does patent protection influence Klotrix’s valuation?
Patents extending into 2032 safeguard market exclusivity for key formulations and methods, supporting revenue projections and investor confidence.

Sources
[1] MarketResearch.COM, "Multiple Myeloma Drugs Market Report," 2022.
[2] Klotrix Pharmaceuticals official communications, Q2 2023.

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