Evidence map›Paper›PMID 33709626›Full record

ArticleCancer reports (Hoboken, N.J.)2021

ModraDoc006, an oral docetaxel formulation in combination with ritonavir (ModraDoc006/r), in metastatic castration-resistant prostate cancer patients: A phase Ib study.

Marit A C Vermunt, Debbie G J Robbrecht, Lot A Devriese, Julie M Janssen, Bas Thijssen, Marianne Keessen, Maarten van Eijk, Rob Kessels, Ferry A L M Eskens, Jos H Beijnen and 2 more

Open access · goldAbstract readClinical Trial, Phase IMulticenter Study
In one paragraph

Article in Cancer reports (Hoboken, N.J.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.6field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 12 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 1 country.

Marit A C VermuntDepartment of Clinical Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.ORCID 0000-0002-2674-1291
Debbie G J RobbrechtDepartment of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.ORCID 0000-0003-2490-9991
Lot A DevrieseDepartment of Medical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands.
Julie M JanssenDepartment of Pharmacy and Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Bas ThijssenDepartment of Pharmacy and Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Marianne KeessenModra Pharmaceuticals B.V., Amsterdam, The Netherlands.
Maarten van EijkDepartment of Pharmacy and Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.ORCID 0000-0001-7246-4857
Rob KesselsDepartment of Biometrics, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Ferry A L M EskensDepartment of Medical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands.
Jos H BeijnenDepartment of Pharmacy and Pharmacology, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Niven MehraDepartment of Medical Oncology, Radboud University Medical Center, Nijmegen, The Netherlands.
Andries M BergmanDepartment of Medical Oncology and Oncogenomics, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
The Netherlands Cancer Institute · NLErasmus MC Cancer Institute · NLRadboud University Nijmegen · NLTeva Pharmaceuticals (Netherlands) · NLUniversity Medical Center Utrecht · NLUtrecht University · NL

Funding

Modra Pharmaceuticals BV
6 · The paper itself

Abstract

backgroundModraDoc006 is an oral formulation of docetaxel, which is co-administered with the cytochrome P450 3A4 and P-glycoprotein inhibitor ritonavir (r): ModraDoc006/r. Weekly treatment with ModraDoc006/r had been evaluated in phase I trials in patients with different types of advanced solid tumors, but up to this point in time not in patients with metastatic castration-resistant prostate cancer (mCRPC).

aimWe assessed safety and pharmacokinetics (PK) of ModraDoc006/r to establish the recommended phase 2 dose (RP2D) in patients with mCRPC.

methodsmCRPC patients, treatment naïve or following abiraterone or enzalutamide treatment, were included. Dose-escalation of ModraDoc006/r was based on safety and docetaxel PK. Antitumor activity was assessed by serum prostate-specific antigen (PSA) and radiological evaluation.

resultsCohort 1 (n = 5) received once weekly ModraDoc006 30 mg with ritonavir 100 mg in the morning, and ModraDoc006 20 mg with ritonavir 100 mg in the evening (30-20/100-100). The mean docetaxel area under the plasma concentration-time curve (mAUC0-inf) was 461 ng/mL × h with 1 dose limiting toxicity (DLT); grade 3 alanine transferase increase. In cohort 2 (n = 6, ModraDoc006/r 30-20/200-200), the mAUC0-inf was 1687 ng/mL × h with 2 DLTs; grade 3 diarrhea and mucositis. In cohort 3A (n = 6, ModraDoc006/r 30-20/200-100), the mAUC0-inf was 1517 ng/mL × h with 1 DLT; grade 3 diarrhea. In cohort 3B (n = 3, ModraDoc006/r 20-20/200-100), the mAUC0-inf was 558 ng/mL × h without DLTs. The mAUC0-inf exceeded estimated exposures of intravenous docetaxel in cohort 2 and 3A, was lower in cohort 1 and was in range in cohort 3B. PSA decreases of >50% occurred in 6/10 evaluable patients throughout the various cohorts. In five radiological evaluable patients, two confirmed partial responses were observed.

conclusionThe RP2D was established at weekly ModraDoc006/r 30-20/200-100. Observed PSA and radiological responses suggest promising clinical activity. These results have led to an ongoing randomized Phase 2b study, comparing weekly ModraDoc006/r with 3-weekly IV docetaxel in patients with mCRPC.

Indexed as

Administration, OralAgedAged, 80 and overAntineoplastic Combined Chemotherapy ProtocolsDocetaxelDose-Response Relationship, DrugDrug Administration ScheduleHumansKallikreinsMaleMiddle AgedNeoplasm GradingProstate-Specific AntigenProstatic Neoplasms, Castration-ResistantRitonavirTreatment OutcomeDocetaxelKallikreinsKLK3 protein, humanProstate-Specific AntigenRitonavirchemotherapyclinical trialsdrug discovery and deliveryprostate cancer

Identifiers

PMID33709626
PMCPMC8388171
OpenAlexW3134876019

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.