Combination Therapy with Cediranib, Olaparib, and Durvalumab for Advanced Solid Tumors

(DAPPER Trial)

Age: 18+

Sex: Any

Trial Phase: Phase 2

Sponsor: University Health Network, Toronto

Must not be taking: CYP3A inhibitors, CYP3A inducers

Disqualifiers: Other malignancy, CNS metastases, others

No Placebo Group All trial participants will receive the active study treatment (no placebo)

Prior Safety Data This treatment has passed at least one previous human trial

Compensation: Varies

Number of Visits: Unknown

Duration: 3 years

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial tests combinations of cancer treatments for individuals with advanced colorectal cancer, pancreatic cancer, or leiomyosarcoma. The goal is to assess how these treatments, including pills and infusions, affect the body’s immune and genetic markers. The trial consists of two groups: one receives olaparib (a PARP inhibitor) and durvalumab (an immunotherapy drug), while the other receives cediranib (a VEGFR inhibitor) and durvalumab. Individuals with these specific cancers who have not responded to other treatments may be suitable candidates. Participants must be willing to provide tissue samples and undergo regular check-ups. As a Phase 2 trial, the research focuses on evaluating the treatment's effectiveness in an initial, smaller group of people.

Will I have to stop taking my current medications?

The trial requires a 4-week period without any prior anti-cancer treatments before starting the study. Additionally, if you are taking certain medications that strongly affect liver enzymes (CYP3A inhibitors or inducers), you may need to stop them 1-5 weeks before starting the trial, depending on the specific medication.

Is there any evidence suggesting that this trial's treatments are likely to be safe?

Previous studies have shown some safety data for the combination of olaparib and durvalumab. Research indicates that patients often tolerate these drugs well, though some experienced side effects like nausea and fatigue. Monitoring for these effects is important, but they are generally manageable.

For the cediranib and durvalumab combination, earlier studies show similar findings. Patients mainly reported mild to moderate side effects, such as high blood pressure and diarrhea. These side effects are common with cancer medications and can often be managed with supportive care.

Both combinations have been tested in people with advanced cancers, and the safety profiles align with typical expectations for these treatments. Discuss potential side effects with the trial team to understand what to expect. ^{1 2 3 4 5}

Why are researchers excited about this trial's treatments?

Researchers are excited about these treatments because they combine targeted therapies with immunotherapy to tackle advanced solid tumors. Olaparib is a PARP inhibitor that interferes with cancer cell repair mechanisms, while Cediranib is a VEGFR tyrosine kinase inhibitor that disrupts blood vessel growth in tumors. Both are paired with Durvalumab, an immune checkpoint inhibitor that boosts the body's immune response against cancer cells. This combination approach is different from standard chemotherapy, as it targets specific pathways in cancer cells and enhances the immune system's ability to fight cancer, potentially leading to improved outcomes.

What evidence suggests that this trial's treatments could be effective for advanced solid tumors?

This trial will compare two different combination therapies for advanced solid tumors. Research has shown that using olaparib and durvalumab together, which participants in Cohort A will receive, offers significant benefits. In earlier studies, this combination more than doubled the duration of patient response compared to chemotherapy for similar cancers, with some patients experiencing long-lasting positive effects.

Participants in Cohort B will receive the combination of cediranib and durvalumab. This combination has also been studied, and researchers found it to be safe and generally well-tolerated, though its effectiveness was limited. Cediranib might not work as well as other combinations, but it remains under investigation. ^{5 6 7 8 9}

Who Is on the Research Team?

Lillian Siu, MD

Principal Investigator

Princess Margaret Cancer Centre

Are You a Good Fit for This Trial?

Adults with advanced colorectal cancer, pancreatic adenocarcinoma, or leiomyosarcoma that's not curable and has failed standard therapy can join. They must be willing to use effective contraception, provide tumor tissue samples, have normal organ function, and no recent major surgeries. Excluded are those with certain heart conditions, uncontrolled hypertension or seizures, recent bleeding events or blood transfusions.

Inclusion Criteria

Females of childbearing potential who are sexually active with a non-sterilized male partner must agree to practice true abstinence or at least two effective methods of contraception from 28 days prior to starting durvalumab, olaparib or cediranib, and agree to continue using such precautions while taking durvalumab, olaparib or cediranib and for 90 days following the last dose of investigational product(s). Periodic abstinence, the rhythm method, and the withdrawal method are not acceptable methods of contraception. They must also refrain from egg cell donation and breastfeeding during study participation and for at least 90 days after the final dose of investigational product(s)

Non-sterilized males who are sexually active with a female partner of childbearing potential must agree to use at least two effective methods of contraception from Day 1 through 90 days after receipt of the final dose of investigational product(s). In addition, they must refrain from sperm donation for 90 days after the final dose of investigational product(s). Female partners of male patients should also use a highly effective form of contraception if they are of childbearing potential

Subject is willing and able to comply with the protocol for the duration of the study including undergoing treatment and scheduled visits and examinations including follow up

Exclusion Criteria

Only supratentorial metastases allowed

No history of intracranial hemorrhage

Measurable disease outside the CNS

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive durvalumab intravenously every 4 weeks. Cohort A receives olaparib orally twice a day continuously, while Cohort B receives cediranib orally once a day for 5 consecutive days with 2 days off each week.

3 years

Follow-up

Participants are monitored for safety and effectiveness after treatment, including overall response rate, clinical benefit rate, progression-free survival, and overall survival.

3 years

What Are the Treatments Tested in This Trial?

Interventions

• Cediranib
• Durvalumab
• Olaparib

Trial Overview

The trial tests combinations of Olaparib (a pill for DNA repair inhibition), Cediranib (a pill for blocking blood vessel growth in tumors), and Durvalumab (an IV drug boosting immune response against cancer). Participants will receive treatments based on their assigned cohort to see how these drugs affect tumor biomarkers.

How Is the Trial Designed?

Group I: Cohort B Experimental Treatment 2 Interventions

Cediranib (given orally at a dose of 20 mg daily, 5 days on 2 days off) in combination with Durvalumab (given intravenously at a dose of 1500 mg every 4 weeks)

Group II: Cohort A Experimental Treatment 2 Interventions

Olaparib (given orally at a dose of 300 mg twice a day) in combination with Durvalumab (given intravenously at a dose of 1500 mg every 4 weeks)

Cediranib is already approved in United States, European Union for the following indications:

Approved in United States as Cediranib for:

• Alveolar soft part sarcoma

Approved in European Union as Cediranib for:

• Alveolar soft part sarcoma

Who Is Running the Clinical Trial?

University Health Network, Toronto

Lead Sponsor

Trials

1,555

Recruited

526,000+

AstraZeneca

Industry Sponsor

Trials

4,491

Recruited

290,540,000+

Sir Pascal Soriot

AstraZeneca

Chief Executive Officer since 2012

Veterinary Medicine from École nationale vétérinaire d'Alfort, MBA from HEC Paris

Dr. Cristian Massacesi

AstraZeneca

Chief Medical Officer since 2021

MD from Marche Polytechnic University, Oncology training at Royal Marsden Hospital, Kaplan Comprehensive Cancer Center, and European Institute of Oncology

Pascal Soriot

AstraZeneca

Chief Executive Officer since 2012

Veterinary Medicine from École nationale vétérinaire d'Alfort, MBA from HEC Paris

Cristian Massacesi

AstraZeneca

Chief Medical Officer since 2021

MD from Marche Polytechnic University, Medical Oncology training at Royal Marsden Hospital, Kaplan Comprehensive Cancer Center, and European Institute of Oncology

Published Research Related to This Trial

In the BAROCCO trial involving 123 patients with recurrent platinum-sensitive ovarian cancer, the combination of cediranib and olaparib did not show superior progression-free survival (PFS) compared to paclitaxel chemotherapy, with median PFS of 5.6 months for the continuous cediranib-olaparib group and 3.1 months for the control group.

Despite not outperforming chemotherapy, the cediranib-olaparib combination was associated with a lower rate of treatment discontinuation due to adverse events (5% in the intermittent arm) and offers a potential non-chemotherapy treatment option for heavily pretreated patients.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Randomized phase II trial of weekly paclitaxel vs. cediranib-olaparib (continuous or intermittent schedule) in platinum-resistant high-grade epithelial ovarian cancer. Colombo, N., Tomao, F., Benedetti Panici, P., et al.[2022]

The combination of olaparib, cediranib, and durvalumab was found to be tolerable in a phase 1 study involving 9 patients with recurrent women's cancers, with no dose-limiting toxicities reported.

The treatment showed promising preliminary efficacy, with a 67% clinical benefit rate, including partial responses in 44% of patients, indicating potential for further investigation in a phase 2 study for recurrent ovarian cancer.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

A phase I study of the PD-L1 inhibitor, durvalumab, in combination with a PARP inhibitor, olaparib, and a VEGFR1-3 inhibitor, cediranib, in recurrent women's cancers with biomarker analyses. Zimmer, AS., Nichols, E., Cimino-Mathews, A., et al.[2023]

The combination of cediranib and olaparib did not show clinically meaningful activity in patients with metastatic pancreatic ductal adenocarcinoma (mPDAC) who do not have a known BRCA mutation, as no objective responses were observed in the study of 19 patients.

Despite some patients experiencing stable disease for a median of 3.1 months, the overall survival was only 3.4 months, indicating limited efficacy of this treatment combination in this patient population.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Clinical Activity and Safety of Cediranib and Olaparib Combination in Patients with Metastatic Pancreatic Ductal Adenocarcinoma without BRCA Mutation. Kim, JW., Cardin, DB., Vaishampayan, UN., et al.[2022]

In a phase I study involving 26 women with recurrent cancers, the combination of the PD-L1 inhibitor durvalumab with olaparib or cediranib was found to be tolerable and showed promising anti-tumor activity, with an 83% disease control rate for the durvalumab plus olaparib group.

The recommended phase II doses were established as durvalumab 1,500 mg every 4 weeks with olaparib 300 mg twice daily, or cediranib 20 mg on an intermittent schedule, indicating that these combinations could be viable options for further investigation in treating recurrent women's cancers.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Safety and Clinical Activity of the Programmed Death-Ligand 1 Inhibitor Durvalumab in Combination With Poly (ADP-Ribose) Polymerase Inhibitor Olaparib or Vascular Endothelial Growth Factor Receptor 1-3 Inhibitor Cediranib in Women's Cancers: A Dose-Escalation, Phase I Study. Lee, JM., Cimino-Mathews, A., Peer, CJ., et al.[2022]

In a phase IIb trial involving 60 women with platinum-resistant recurrent ovarian cancer, the combination of cediranib and olaparib showed a modest objective response rate (ORR) of 15.3%, indicating some clinical activity in this heavily pretreated population.

The treatment was associated with significant safety concerns, as 73.3% of patients experienced grade ≥3 adverse events, highlighting the need for careful monitoring and further research into biomarkers that could predict treatment response.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Cediranib in Combination with Olaparib in Patients without a Germline BRCA1/2 Mutation and with Recurrent Platinum-Resistant Ovarian Cancer: Phase IIb CONCERTO Trial. Lee, JM., Moore, RG., Ghamande, S., et al.[2023]

The maximum-tolerated dose (MTD) of cediranib in children with recurrent CNS tumors was initially set at 32 mg/m²/day, but excessive toxicities led to concerns about its long-term tolerability.

At a lower dose of 20 mg/m²/day, cediranib still showed poor tolerability, indicating that both doses may not be suitable for extended treatment in this population.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

A phase I trial and PK study of cediranib (AZD2171), an orally bioavailable pan-VEGFR inhibitor, in children with recurrent or refractory primary CNS tumors. Kieran, MW., Chi, S., Goldman, S., et al.[2018]

Citations

1.

pmc.ncbi.nlm.nih.gov

pmc.ncbi.nlm.nih.gov/articles/PMC6038862/

Safety and efficacy of durvalumab (MEDI4736) in various ...

Durvalumab is safe in patients with many solid cancers and, in combination with tremelimumab, it has a tolerable safety profile and is associated with improved ...

2.

sciencedirect.com

sciencedirect.com/science/article/pii/S153300282400032X

A Phase II, Open-Label, Randomized Trial of Durvalumab ...

Here we present the clinical and pharmacodynamic results of the Basket Combination Study of Inhibitors of DNA Damage Response, Angiogenesis and PD-L1 in ...

3.

clinicaltrials.gov

clinicaltrials.gov/study/NCT02484404

NCT02484404 | Phase I/II Study of the Anti-Programmed ...

Background: - Durvalumab is a drug that may help people s immune systems respond to and kill cancer cells. Olaparib is a drug that may inhibit repairing DNA ...

4.

aacrjournals.org

aacrjournals.org/clincancerres/article/29/20/4128/729413/Safety-Immunologic-and-Clinical-Activity-of

Safety, Immunologic, and Clinical Activity of Durvalumab in ...

In the DAPPER study, durvalumab in combination with olaparib or cediranib was safe and well-tolerated but had limited clinical efficacy. Overall, the toxicity ...

5.

researchgate.net

researchgate.net/publication/396218751_Phase_II_proof-of-concept_study_of_durvalumab_and_cediranib_with_and_without_olaparib_in_recurrent_ovarian_cancer

(PDF) Phase II proof-of-concept study of durvalumab and ...

Purpose We assessed the efficacy of anti–PD-L1 durvalumab in combination with olaparib and cediranib (DOC), compared with the standard-of-care ...

6.

accessdata.fda.gov

accessdata.fda.gov/drugsatfda_docs/label/2025/761069s050lbl.pdf

IMFINZI® (durvalumab) injection, for intravenous use

The data described in the WARNINGS AND PRECAUTIONS section reflect exposure to IMFINZI as a single agent in a total of 1,889 patients enrolled in the PACIFIC ...

7.

imfinzihcp.com

imfinzihcp.com/biliary-tract-cancers/safety.html

IMFINZI® (durvalumab) Safety Profile & Adverse Reactions ...

Review the safety profile of IMFINZI® (durvalumab) and the adverse reactions patients with advanced BTCs may experience while receiving IMFINZI.

8.

astrazenecaclinicaltrials.com

astrazenecaclinicaltrials.com/study/D8480C00014

Safety and Tolerability Study of AZD2171 in combination ...

The purpose of the study is to determine if the maximum tolerated doses of AZD2171, in combination with AZD0530, in treating patients with advanced solid ...

9.

ema.europa.eu

ema.europa.eu/en/documents/variation-report/imfinzi-h-c-004771-ii-0064-epar-assessment-report-variation_en.pdf

Imfinzi INN durvalumab - European Medicines Agency

advanced solid tumours. 16 Oct. 2017. Safety ... Supportive safety data from 13 clinical trials conducted in several solid tumour.