Phase II Study of Radiotherapy Followed by Durvalumab (MEDI4736) and Ceralasertib (AZD6738) in Stage III NSCLC Patients With Thoracic Relapses +/- Oligometastases After PACIFIC Regimen (AUSTRAL)

Durvalumab will be administered via IV infusion at a dose of 1500 mg on day 8 Q4W until confirmed disease progression unless there is unacceptable toxicity, withdrawal of consent, or another discontinuation criterion is met.

Ceralasertib dose will be administered orally, 240mg BID, approximately 12 ± 2 hours apart, days 1 to 7 q28 (Q4W), up to progression or unacceptable toxicity.

Loco-regional recurrences of the primary tumor and regional lymph node metastases will be treated with a total dose of 36 to 50 Gy in daily fractions with a dose of 2 to 3 Gy per fraction. Two weeks from the last dose of radiotherapy, a systemic treatment with durvalumab and ceralasertib will be started.