PV Bulletin

QSP-Based Dose Selection for Minimum Anticipated Biological Effect Level (MABEL) in FIH Trials - Draft Guidance

This draft guidance aids sponsors in employing quantitative systems pharmacology for dose selection in early clinical trials.

Primary source: Advisory Committee Guidance Documents

PV Impact Brief

Urgency: HighConfidence: high

What changed

Introduction of guidelines encouraging QSP modeling for MABEL dose selection in first-in-human clinical trials, replacing reliance on traditional animal toxicity data.

Why it matters

This guidance aims to improve early-stage safety assessment, reducing the risk of over-exposure and enhancing participant safety in clinical trials, thus impacting pharmacovigilance strategies for early clinical development.

Action needed

Stakeholders must prepare for discussions about the integration of QSP methods in investigational new drug (IND) submissions, including a review of IND data packages to align with the new recommendations.

Relevant for
Regulatory Intelligence LeadPV Quality Lead
Processes impacted
Inspection Readiness
Owner

Regulatory Intelligence Lead

Review cadence

Review before 2026-10-06.

Policy change details

Document type
Draft Guidance
Policy status
draft
Publication date
2026-08-06
Consultation deadline
2026-10-06
Policy change
This draft guidance provides recommendations for sponsors on using quantitative systems pharmacology (QSP) to support the selection of starting doses in first-in-human (FIH) clinical trials. It focuses on products where the minimum anticipated biological effect level (MABEL) approach is recommended, moving towards more advanced quantitative medicine approaches rather than relying solely on traditional animal toxicology studies.

Key changes

Introduction of QSP-based modeling for MABEL dose selection; emphasis on human-relevant biological data over traditional animal toxicity for starting dose justification; recommendations for IND submission data packages.

Affected workflows

Inspection Readiness

Responsible groups

Regulatory AffairsPharmacovigilance OperationsClinical Safety

PV impact

The guidance enhances early-stage safety assessment by providing a robust framework for dose selection in FIH trials, which is critical for preventing over-exposure and managing safety risks in human participants. It encourages the use of human-relevant biological modeling (QSP) to justify safety margins, impacting the pharmacovigilance planning for early clinical development.

View regulator source

Source document details

Exact policy details

Publication Date
June 2026
Applies to: All regulatory submissions utilizing the guidance.
Content current as of: 06/25/2026 · p. 1 · High · Source
Comment Period for Draft Guidance
30 days from publication in the Federal Register
Applies to: Stakeholders wishing to provide comments.
Comments and suggestions regarding this draft document should be submitted within 30 days of publication in the Federal Register. · p. 1 · High · Source
Docket Number
FDA-2026-D-6539
Applies to: Referenced for comments submission.
All written comments should be identified with this document's docket number: FDA-2026-D-6539. · p. 1 · High · Source
Guidance Status
Not for implementation; Contains non-binding recommendations.
Applies to: All users of the guidance document.
Draft - Not for implementation. Contains non-binding recommendations. · p. 1 · High · Source

Extracted documents

Evidence and confidence

Confidence: highSource updated: Aug 6, 2026

Full briefing

Practical implication

Stakeholders must prepare for discussions about the integration of QSP methods in investigational new drug (IND) submissions, including a review of IND data packages to align with the new recommendations.

The FDA has issued draft guidance recommending the use of quantitative systems pharmacology (QSP) models for selecting starting doses in first-in-human trials. This approach emphasizes the importance of human-relevant biological data over traditional animal studies in determining minimum anticipated biological effect levels (MABEL). The guidance is designed to enhance safety assessments and provide a structured framework for regulatory submissions.

What changed: Introduction of guidelines encouraging QSP modeling for MABEL dose selection in first-in-human clinical trials, replacing reliance on traditional animal toxicity data.

Why it matters: This guidance aims to improve early-stage safety assessment, reducing the risk of over-exposure and enhancing participant safety in clinical trials, thus impacting pharmacovigilance strategies for early clinical development.

Practical implication: Stakeholders must prepare for discussions about the integration of QSP methods in investigational new drug (IND) submissions, including a review of IND data packages to align with the new recommendations.

View original source

Published from the Firecrawl policy change extraction pipeline.

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