Enhanced Crenolanib-Based Therapies for FLT3 Mutated Proliferative Disorders

Publication ID: 24-11857546_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Crenolanib-Based Therapies for FLT3 Mutated Proliferative Disorders,” Published Technical Disclosure No. 24-11857546_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857546_0006_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,546.

Summary of the Inventive Concept

The present invention relates to novel improvements and enhancements of crenolanib-based therapies for treating FLT3 mutated proliferative disorders, providing more effective, efficient, and safe treatment options for patients.

Background and Problem Solved

The original patent, 'Crenolanib for treating FLT3 mutated proliferative disorders relapsed/refractory to prior treatment,' has limitations in terms of dosing, efficacy, and patient monitoring. The new inventive concept addresses these limitations by introducing systems, methods, and compositions that enhance the treatment outcomes and patient experience.

Detailed Description of the Inventive Concept

The new inventive concept encompasses a system for treating FLT3 mutated proliferative disorders, comprising a crenolanib administration module and a monitoring module for tracking FLT3 tyrosine kinase activity. The system adjusts the crenolanib administration based on the FLT3 tyrosine kinase activity, ensuring optimal treatment outcomes. Additionally, the inventive concept includes methods for enhancing the efficacy of crenolanib, compositions for treating FLT3 mutated proliferative disorders, and systems for monitoring and treating these disorders. These improvements provide more targeted, efficient, and safe treatment options for patients.

Novelty and Inventive Step

The new claims introduce novel and non-obvious improvements to the original patent, including the integration of FLT3 tyrosine kinase activity monitoring, co-administration of second pharmaceutical agents, and the use of FLT3-binding antibodies. These advancements provide a significant inventive step over the prior art, enabling more effective and efficient treatment of FLT3 mutated proliferative disorders.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept may include varying the dose and administration schedule of crenolanib, using different types of FLT3 inhibitors or antibodies, or incorporating additional monitoring modules for tracking patient response. These variations ensure broad conceptual coverage and adaptability to different treatment scenarios.

Potential Commercial Applications and Market

The enhanced crenolanib-based therapies have significant commercial potential in the pharmaceutical industry, particularly in the treatment of FLT3 mutated proliferative disorders. The target market includes patients with relapsed or refractory FLT3 mutated cancers, as well as healthcare providers and researchers seeking more effective and efficient treatment options.

Field of Art

Pharmaceutical oncology, specifically targeted therapies for hematological malignancies with a focus on FLT3 tyrosine kinase inhibitors and cancer treatment methodologies

Person of Ordinary Skill (PHOSITA) Profile

A skilled practitioner with advanced degrees in pharmacology or oncology, expertise in targeted cancer therapies, understanding of tyrosine kinase inhibition mechanisms, and knowledge of clinical treatment optimization strategies

Obviousness Rationale

A person having ordinary skill in the art would recognize that the PTD's variations represent predictable extensions of the source patent's core methodology for treating FLT3 mutated proliferative disorders. The disclosed improvements in monitoring, dosage adjustment, and combination therapies are logical progressions that would be apparent to a skilled practitioner seeking to optimize crenolanib's therapeutic efficacy. These variations demonstrate incremental advancements consistent with standard pharmaceutical research and development practices.

Obvious Combinations & Variations

Source Patent Element
Method for treating hematological malignancies with crenolanib targeting FLT3 mutations
PTD Variation
Adding a monitoring module to track FLT3 tyrosine kinase activity and dynamically adjust treatment
Obviousness Reasoning
A PHOSITA would recognize that real-time monitoring of treatment response is a standard approach in precision medicine, enabling personalized therapeutic optimization
Source Patent Element
Crenolanib administration for FLT3 mutated proliferative disorders
PTD Variation
Co-administering additional pharmaceutical agents like FLT3, PI3K, or MEK inhibitors
Obviousness Reasoning
Combination therapies are a well-established strategy in oncology for enhancing treatment efficacy and overcoming drug resistance
Source Patent Element
Fixed dosage ranges for crenolanib (50-500 mg per day)
PTD Variation
Refining dosage to more specific ranges (300-400 or 400-500 mg per day) with genetic mutation tracking
Obviousness Reasoning
Dose optimization and genetic profiling represent standard practices in personalized cancer treatment development
Source Patent Element
Treatment of FLT3 mutated proliferative disorders
PTD Variation
Incorporating FLT3-binding antibodies into treatment composition
Obviousness Reasoning
Combining small molecule inhibitors with targeted antibodies is a predictable approach for enhancing therapeutic specificity and effectiveness
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857546, the present publication demonstrates that the claimed variations in FLT3 mutated proliferative disorder treatment would have been obvious to a person having ordinary skill in the art at the time of invention. The disclosed improvements represent predictable extensions of known therapeutic strategies, utilizing standard methodological approaches in targeted cancer treatment that would have been readily conceived by a skilled practitioner.

Original Patent Information

Patent NumberUS 11,857,546
TitleCrenolanib for treating FLT3 mutated proliferative disorders relapsed/refractory to prior treatment
Assignee(s)Arog Pharmaceuticals, Inc.