ElendiLabs Logo

Questions? 10 seconds to sign up

Join the platform

Back to Articles

Need Regulatory Help? Try Our Platform

Post your regulatory questions or request quotations from verified pharmaceutical consultants worldwide. Get matched with experts who specialize in your market.

Other

March 10, 2026

Approximately 5 minutes

Guideline for Liposome Drug Product Development in Japan

1. Background and policy intent

Liposome drug products are microvesicles with a lipid bilayer enclosing an aqueous compartment, encapsulating active substances to improve in vivo stability, pharmacokinetics, and intracellular behavior. Issued in March 2016, the guideline promotes appropriate development and prompt patient access by providing pharmaceutical and nonclinical/early clinical study information. It applies to products affecting stability and pharmacokinetics but excludes non-bilayer mixtures. Principles align with ICH guidelines and are applicable to post-marketing issues. Source: https://www.pmda.go.jp/files/000272266.pdf

2. Target products and eligibility types

Target products encapsulate active substances (low-molecular-weight chemicals, nucleic acids, peptides, proteins) in liposomes to influence stability/pharmacokinetics. Eligibility focuses on nanotechnology-based products reducing adverse reactions and improving efficacy via targeted delivery (e.g., EPR effect or ligands). Types include passive/active targeting liposomes. Source: https://www.pmda.go.jp/files/000272266.pdf

3. Consultation pathway before approval

Consultation with PMDA is recommended for individual development. The guideline outlines pre-approval considerations for CMC, nonclinical studies, and FIH trials, emphasizing QbD per ICH Q8(R2)/Q11. Source: https://www.pmda.go.jp/files/000272266.pdf

4. Approval application and review expectations

Applications require detailed characterization of quality attributes (particle size, zeta potential, loading efficiency). Review focuses on control strategies, stability per ICH Q1A(R2)/Q5C, and comparability for changes per ICH Q5E. Expectations include validated methods and risk-based assessments. Source: https://www.pmda.go.jp/files/000272266.pdf

5. Procedure after approval (post-marketing obligations)

Post-approval involves monitoring lipid degradation and quality attributes. The appendix addresses manufacturing changes requiring comparability assessments, potentially including nonclinical/clinical studies. Source: https://www.pmda.go.jp/files/000272266.pdf

6. Practical considerations and positioning versus other pathways

Practically, use multiple lots for characterization and in vitro tests reflecting physiological conditions. Versus standard drugs, liposomes require specific PK measurements (encapsulated/unencapsulated). Positioning integrates with ICH for global consistency. Source: https://www.pmda.go.jp/files/000272266.pdf

7. Effective date

Issued as PSEHB/ELD Notification No. 0328-19 on March 28, 2016. Source: https://www.pmda.go.jp/files/000272266.pdf

ElendiLabs

ElendiLabs Regulatory Affairs Team

Verified RA Consultants

100+ products successfully registered across global markets. Get unbeatable quotations and expert answers — fast.

Ask Anything

We'll follow up with you personally.

100% response rate • Reply within 7 business days

Your email will not be published. We'll only use it to notify you when we respond.

Need Expert Guidance?

Contact us at contact@elendilabs.com / +852 4416 5550