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A Phase I Dose Escalation and Dose Expansion Study to Investigate the Pharmacokinetics and Safety of Subcutaneous Durvalumab

A Phase I, Multicentre, Dose Escalation and Dose Expansion Study to Investigate the Pharmacokinetics and Safety of Subcutaneous Durvalumab in Adult Participants With Solid Tumours

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07391670
Acronym
IMFINZI-subQ
Enrollment
40
Registered
2026-02-06
Start date
2026-03-31
Completion date
2027-08-30
Last updated
2026-08-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Solid Tumours

Keywords

Pharmacokinetics, Non-small cell lung cancer (Stage III, unresectable), Small cell lung cancer (Limited stage), Hepatocellular carcinoma (Unresectable), Subcutaneous, Human hyaluronidase, Monoclonal antibody, Programmed cell death ligand 1 (PD-L1), Programmed cell death protein 1, Anticancer therapy

Brief summary

The purpose of the study is to determine a subcutaneous (SC: under the skin) durvalumab + recombinant human hyaluronidase (rHu) dose that yields systemic drug exposure similar to intravenous (IV: into the veins) durvalumab administration and to evaluate the pharmacokinetics and safety of SC durvalumab + rHu injection in participants with different types of solid tumours (cancers).

Detailed description

This is a Phase I, multicentre study that will consist of 2 parts - * Part 1: Dose Escalation * Part 2: Dose Expansion Part 1 may include participants with solid tumours - non-small cell lung cancer (NSCLC), hepatocellular carcinoma (HCC) or limited-stage small cell lung cancer (LS-SCLC). It will further consist of 2 planned dose levels of SC durvalumab - Dose level 1 (DL1) and Dose level 2 (DL2). Part 2 will include participants with unresectable HCC. It will be initiated once a dose has been identified based on Part 1.

Interventions

DRUGSC durvalumab + rHu

Durvalumab + rHu will be administered subcutaneously.

DRUGIV durvalumab

Durvalumab will be administered intravenously.

DRUGTremelimumab

Tremelimumab will be administered to participants with unresectable HCC as an IV infusion.

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* An Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. * Life expectancy of ≥ 12 weeks at enrolment. * Adequate organ and marrow function. * Minimum body weight \> 30 kg. Part 1 only: Locally Advanced Unresectable (Stage III) NSCLC Participants - * Histological or cytological documented evidence of NSCLC (locally advanced, unresectable, Stage III). * Must have received at least 2 cycles of platinum-based chemotherapy concurrent with definitive radiation therapy. * Have not progressed following definitive concurrent chemoradiation. LS-SCLC Participants - * Histologically or cytologically documented LS-SCLC (Stage I-III). * Received 4 cycles of chemotherapy concurrent with radiotherapy, which must be completed within 1 to 42 days prior to enrolment. * Have not progressed following definitive concurrent chemoradiation. Part 1 and 2: Unresectable HCC Participants - * Unresectable HCC based on histopathological confirmation. * No prior systemic therapy for unresectable HCC. * Must not be eligible for locoregional therapy for unresectable HCC. * Child-Pugh Score class A. * Measurable disease as defined by RECIST v1.1.

Exclusion criteria

* Active or prior documented autoimmune disease requiring systemic treatment. * Uncontrolled infection (including human immunodeficiency virus \[HIV\], hepatitis B or C). * Prior exposure to immune checkpoint inhibitors. Part 1 only: Locally Advanced Unresectable (Stage III) NSCLC Participants - * Mixed SCLC and NSCLC histology. * Active pneumonitis or interstitial lung disease requiring systemic therapy. LS SCLC Participants - * Mixed SCLC and NSCLC histology. * Extensive-stage disease. * History of Grade ≥ 2 pneumonitis. Part 1 and 2: Unresectable HCC Participants - * Hepatic encephalopathy. * Uncontrolled ascites. * Active gastrointestinal (GI) bleeding.

Design outcomes

Primary

MeasureTime frameDescription
Observed lowest concentration before the next dose is administered (Ctrough)From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the Ctrough of SC durvalumab
Area under the concentration-time curveFrom first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the AUC of SC durvalumab.

Secondary

MeasureTime frameDescription
Apparent volume of distribution based on the terminal phase volume (Vz[/F])From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the VZ(/F) of SC durvalumab.
Average drug concentration over a dosing interval (Cavg)From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the Cavg of SC durvalumab.
Serum concentration of durvalumabFrom first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the serum concentration of SC durvalumab at specified timepoints.
Number of participants with adverse events (AEs)Up to Survival Follow-up (approximately 17 months)To assess the safety and tolerability of SC durvalumab.
Number of participants with dose-limiting toxicities (DLTs)Up to Survival Follow-up (approximately 17 months)To assess the safety and tolerability of SC durvalumab.
Area under the concentration-time curve from time 0 to last quantifiable concentration (AUClast)From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the AUClast of SC durvalumab.
Maximum observed concentration (Cmax)From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the Cmax of SC durvalumab.
Terminal elimination half-life (t1/2λz)From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the t1/2λz of SC durvalumab.
Time to reach maximum concentration following drug administration (tmax)From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the tmax of SC durvalumab.
Total body clearance/apparent total body clearance (CL[/F])From first dose of study intervention (Day 1), at predefined intervals throughout the administration of durvalumab (approximately 17 months).To characterise the CL(/F) of SC durvalumab.

Countries

Australia, Georgia, Poland, South Korea, Taiwan

Contacts

CONTACTAstraZeneca Clinical Study Information Center
information.center@astrazeneca.com1-877-240-9479

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 26, 2026