Treatment regimen

Durvalumab after chemoradiotherapy in stage 3 lung cancer (PACIFIC)

One year of consolidation immunotherapy after concurrent chemoradiotherapy

Updated: 28 October 20261 min read2 references

Summary for doctors

  • Unresectable stage 3 non-small cell lung cancer without progression after concurrent chemoradiotherapy [1].
  • Start within 42 days of radiotherapy [1].
  • Pneumonitis (radiation or immune-related) is the most important toxicity.

Dose and schedule

Consolidation durvalumab

Stage 3 lung cancer after chemoradiotherapyCycle length: Every 2 or 4 weeks

Stage 3 lung cancer after chemoradiotherapy

DrugDoseRouteSchedule
Durvalumab10 mg/kg every 2 weeks (or 1500 mg every 4 weeks)IVDay 1
Cycle length
Every 2 or 4 weeks
Duration
Up to 12 months

The PACIFIC dose was 10 mg/kg every 2 weeks [1]; a fixed dose of 1500 mg every 4 weeks was approved later.

Dose source: [2].

Doses follow the trial protocol, guideline or official drug label (source given in the notes of each regimen). Before prescribing, check blood counts, renal and hepatic function, drug interactions and the patient’s condition, and adjust the dose according to the drug label.

Premedication and supportive care

  • No premedication is needed.
  • In EGFR-mutant patients, consolidation osimertinib is the choice instead of durvalumab.

Monitoring and dose adjustment

  • New cough or dyspnoea: CT scan and assessment for pneumonitis; grade 2: hold and give steroids; TSH, glucose, liver enzymes and creatinine at baseline and every 6 weeks; immune-related toxicity as in the immunotherapy toxicity lesson.

Main evidence

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PACIFIC: median progression-free survival 16.8 vs 5.6 months with placebo [1], and at 5-year follow-up overall survival remained longer.

Related cancer types

References

2 references
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Numbers in the text, such as [1], refer to these sources. Sources with a “Study card” button are summarised in the site’s evidence library.

  1. 1
    Durvalumab after Chemoradiotherapy in Stage III Non-Small-Cell Lung CancerAntonia SJ, Villegas A, Daniel D, et al · N Engl J Med · 2017;377:1919-1929
    DOIPubMed Back to text: 1 2 3 4
  2. 2
    IMFINZI (DURVALUMAB) — Prescribing InformationAstrazeneca Pharmaceuticals LP · FDA label · 2026

This page is based on reputable scientific sources and was last updated on 28 October 2026. The content of this website is for educational and informational purposes only and does not replace consultation, diagnosis or treatment by a specialist physician. Consult your treating physician about any treatment decision.