Cited by 221PARP inhibition in cancer therapyOvarian cancer diagnosis and treatmentCancer Immunotherapy and Biomarkers

Combination of PARP inhibitor olaparib, and PD-L1 inhibitor durvalumab, in recurrent ovarian cancer: a proof-of-concept phase II study

Open access
Lampert, Erika J., Zimmer, Alexandra, Padget, Michelle, Cimino-Mathews, Ashley, Nair, Jayakumar R., Liu, Yingmiao, Swisher, Elizabeth M., Hodge, James W. +10 more·2020·Clinical Cancer Research

Published version of a preprint

Abstract

Abstract Purpose: Preclinical studies suggest PARP inhibition (PARPi) induces immunostimulatory micromilieu in ovarian cancer thus complementing activity of immune checkpoint blockade. We conducted a phase II trial of PARPi olaparib and anti–PD-L1 durvalumab and collected paired fresh core biopsies and blood samples to test this hypothesis. Patients and Methods: In a single-center, proof-of-concept phase II study, we enrolled women aged ≥18 with recurrent ovarian cancer. All patients were immune checkpoint inhibitor–naïve and had measurable disease per RECISTv1.1, ECOG performance status 0–2, and adequate organ and marrow function. Patients received olaparib 300 mg twice daily and durvalumab 1,500 mg intravenously every 4 weeks until disease progression, unacceptable toxicity, or withdrawal of consent. Primary endpoint was overall response rate (ORR). Secondary objectives were safety and progression-free survival (PFS). Translational objectives included biomarker evaluation for relationships with clinical response and immunomodulatory effects by treatment. Results: Thirty-five patients with ovarian cancer [median, four prior therapies (IQR, 2–5.5), predominantly platinum-resistant (86%), BRCA wild-type (77%)] received at least one full cycle of treatment. ORR was 14% [5/35; 95% confidence interval (CI), 4.8%–30.3%]. Disease control rate (PR+SD) was 71% (25/35; 95% CI, 53.7%–85.4%). Treatment enhanced IFNγ and CXCL9/CXCL10 expression, systemic IFNγ/TNFα production, and tumor-infiltrating lymphocytes, indicating an immunostimulatory environment. Increased IFNγ production was associated with improved PFS [HR, 0.37 (95% CI, 0.16–0.87), P = 0.023], while elevated VEGFR3 levels were associated with worse PFS (HR, 3.22 (95% CI, 1.23–8.40), P = 0.017]. Conclusions: The PARPi and anti–PD-L1 combination showed modest clinical activity in recurrent ovarian cancer. Our correlative study results suggest immunomodulatory effects by olaparib/durvalumab in patients and indicate that VEGF/VEGFR pathway blockade would be necessary for improved efficacy of the combination.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1158/1078-0432.ccr-20-0056

Cites

40 of 40 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In platinum-resistant ovarian cancer patients given PARP inhibitors plus ICIs, higher circulating type I IFN- and IFNG-related cytokines and malignant-cell PD-L1 expression are associated with better disease outcome.

    “Moreover, increased circulating levels of type I IFN- and IFNG-related cytokines as well as PD-L1 expression in malignant cells have been associated with favorable disease outcome in patients with platinum-resistant ovarian cancer receiving PARP inhibitors plus ICIs (F € arkkil € a et al., 2020; Lampert et al., 2020).”

    From Immunomodulation by targeted anticancer agents (2021) · cites this paper as Lampert et al., 2020

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lampert, E. J., Zimmer, A., Padget, M., Cimino-Mathews, A., Nair, J. R., Liu, Y., Swisher, E. M., Hodge, J. W., Nixon, A. B., Nichols, E., Bagheri, M. H., Levy, E., Radke, M. R., Lipkowitz, S., Annunziata, C. M., Taube, J. M., Steinberg, S. M., & Lee, J.-M.
Affiliations
  • National Cancer Institute (US)
  • 3Department of Pathology, The Johns Hopkins Medical Institution, Baltimore, Maryland.
  • Duke Medical Center (US)
  • University of Washington (US)
  • Frederick National Laboratory for Cancer Research (US)
  • 7Department of Radiology and Imaging Sciences, Clinical Center, National Cancer Institute, Bethesda, Maryland.
  • National Institutes of Health (US)
  • Johns Hopkins University (US)
Corresponding author
Lee, Jung-Min
Venue
Clinical Cancer Research
Published
2020-08-14
Volume
26
Issue
16
Pages
4268-4279
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W3025130660
Cited by
220
References
40
Citations by year
2026: 22 · 2025: 37 · 2024: 32 · 2023: 46 · 2022: 34 · 2021: 37 · 2020: 12
FWCI
11.74
Type
journal article
Language
en
Open access
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NCI CCR (#ZIA BC011525)
  • National Ovarian Cancer Coalition (SU2C-AACRDT16-15)
  • DDCF (#2014194)
  • NCI NIH (HHSN261200800001E)
Topics
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian cancer diagnosis and treatment
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
recurrent ovarian cancer, olaparib, durvalumab, PARP inhibitors, PD-L1 inhibitors, immune checkpoint blockade, combination therapy, tumor immunology, interferon-gamma, VEGFR-3, tumor-infiltrating lymphocytes, platinum-resistant ovarian cancer, BRCA wild-type, progression-free survival, biomarkers, translational biomarkers
MeSH terms
Poly(ADP-ribose) Polymerase Inhibitors, Progression-Free Survival, Immune Checkpoint Inhibitors, Adult, Aged, Aged, 80 and over, Antibodies, Monoclonal, Female, Humans, Interferon-gamma, Middle Aged, Neoplasm Recurrence, Local, Ovarian Neoplasms, Phthalazines, Piperazines, Poly(ADP-ribose) Polymerases, Gene Expression Regulation, Neoplastic, Vascular Endothelial Growth Factor A, Chemokine CXCL10, Chemokine CXCL9, B7-H1 Antigen

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review