PV Bulletin

Fluoropyrimidine-based Chemotherapies: Monitor Adverse Effects and Adjust Doses

The ANSM urges vigilance on the adverse effects and proper dosing adjustments for fluoropyrimidine-based chemotherapies, following a national pharmacovigilance inquiry on severe toxicities.

Primary source: Consultez le rapport de l’enquête nationale de pharmacovigilance sur les toxicités graves des spécialités contenant du 5

Translated From French

PV Bulletin does not take any responsibility for translation errors or omissions, though it has used the best available translation engine.

PV Impact Brief

Urgency: HighConfidence: high

What changed

Mandatory DPD deficiency screening is now required for all patients prior to initiating treatment with fluoropyrimidines.

Why it matters

This regulatory change is crucial to prevent severe adverse effects in patients due to DPD deficiency, ensuring safer administration of chemotherapy.

Action needed

Healthcare providers must implement mandatory DPD screening for all patients before starting fluoropyrimidine treatment and enhance monitoring for adverse effects.

Relevant for
Regulatory Intelligence LeadMedical Safety Lead
Processes impacted
Signal Management
Owner

Regulatory Intelligence Lead

Review cadence

Ongoing monitoring of compliance and adverse effects.

Evidence and confidence

Confidence: highSource updated: Sep 9, 2026

Full briefing

Practical implication

Healthcare providers must implement mandatory DPD screening for all patients before starting fluoropyrimidine treatment and enhance monitoring for adverse effects.

The ANSM has recommended enhanced monitoring and adjustment of doses for chemotherapies based on fluoropyrimidines, specifically capecitabine and 5-FU, to mitigate risks of severe adverse effects associated with these treatments, as highlighted by ongoing pharmacovigilance inquiries.

What changed: Mandatory DPD deficiency screening is now required for all patients prior to initiating treatment with fluoropyrimidines.

Why it matters: This regulatory change is crucial to prevent severe adverse effects in patients due to DPD deficiency, ensuring safer administration of chemotherapy.

Practical implication: Healthcare providers must implement mandatory DPD screening for all patients before starting fluoropyrimidine treatment and enhance monitoring for adverse effects.

View original source

  • Source: ANSM (France) - News feed
  • Published at source: 2026-09-09T00:00:00.000Z
  • Discovered by monitor: 2026-09-09T21:45:30.488Z

Published from the regulator source ingestion pipeline after PV impact triage.

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