A Phase 1 Trial of Durvalumab in Combination with Bacillus Calmette-Guerin (BCG) or External Beam Radiation Therapy in Patients with BCG-unresponsive Non-muscle-Invasive Bladder Cancer: The Hoosier Cancer Research Network GU16-243 ADAPT-BLADDER Study.
Bacillus Calmette-Guerin
Bacillus Calmette-Guerin unresponsive
Bladder cancer
Clinical trial
Durvalumab
Non–muscle invasive
PD-L1
Radiation
Urothelial carcinoma
Journal
European urology
ISSN: 1873-7560
Titre abrégé: Eur Urol
Pays: Switzerland
ID NLM: 7512719
Informations de publication
Date de publication:
06 2023
06 2023
Historique:
received:
30
07
2022
revised:
09
12
2022
accepted:
09
01
2023
pmc-release:
01
06
2024
medline:
15
5
2023
pubmed:
31
1
2023
entrez:
30
1
2023
Statut:
ppublish
Résumé
Novel treatments and trial designs remain a high priority for bacillus Calmette-Guerin (BCG)-unresponsive non-muscle-invasive bladder cancer (NMIBC) patients. To evaluate the safety and preliminary efficacy of anti-PD-L1 directed therapy with durvalumab (D), durvalumab plus BCG (D + BCG), and durvalumab plus external beam radiation therapy (D + EBRT). A multicenter phase 1 trial was conducted at community and academic sites. Patients received 1120 mg of D intravenously every 3 wk for eight cycles. D + BCG patients also received full-dose intravesical BCG weekly for 6 wk with BCG maintenance recommended. D + EBRT patients received concurrent EBRT (6 Gy × 3 in cycle 1 only). Post-treatment cystoscopy and urine cytology were performed at 3 and 6 -mo, with bladder biopsies required at the 6-mo evaluation. The recommended phase 2 dose (RP2D) for each regimen was the primary endpoint. Secondary endpoints included toxicity profiles and complete response (CR) rates. Twenty-eight patients were treated in the D (n = 3), D + BCG (n = 13), and D + EBRT (n = 12) cohorts. Full-dose D, full-dose BCG, and 6 Gy fractions × 3 were determined as the RP2Ds. One patient (4%) experienced a grade 3 dose limiting toxicity event of autoimmune hepatitis. The 3-mo CR occurred in 64% of all patients and in 33%, 85%, and 50% within the D, D + BCG, and D + EBRT cohorts, respectively. Twelve-month CRs were achieved in 46% of all patients and in 73% of D + BCG and 33% of D + EBRT patients. D combined with intravesical BCG or EBRT proved feasible and safe in BCG-unresponsive NMIBC patients. Encouraging preliminary efficacy justifies further study of combination therapy approaches. Durvalumab combination therapy can be safely administered to non-muscle-invasive bladder cancer patients with the goal of increasing durable response rates.
Sections du résumé
BACKGROUND
Novel treatments and trial designs remain a high priority for bacillus Calmette-Guerin (BCG)-unresponsive non-muscle-invasive bladder cancer (NMIBC) patients.
OBJECTIVE
To evaluate the safety and preliminary efficacy of anti-PD-L1 directed therapy with durvalumab (D), durvalumab plus BCG (D + BCG), and durvalumab plus external beam radiation therapy (D + EBRT).
DESIGN, SETTING, AND PARTICIPANTS
A multicenter phase 1 trial was conducted at community and academic sites.
INTERVENTION
Patients received 1120 mg of D intravenously every 3 wk for eight cycles. D + BCG patients also received full-dose intravesical BCG weekly for 6 wk with BCG maintenance recommended. D + EBRT patients received concurrent EBRT (6 Gy × 3 in cycle 1 only).
OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS
Post-treatment cystoscopy and urine cytology were performed at 3 and 6 -mo, with bladder biopsies required at the 6-mo evaluation. The recommended phase 2 dose (RP2D) for each regimen was the primary endpoint. Secondary endpoints included toxicity profiles and complete response (CR) rates.
RESULTS AND LIMITATIONS
Twenty-eight patients were treated in the D (n = 3), D + BCG (n = 13), and D + EBRT (n = 12) cohorts. Full-dose D, full-dose BCG, and 6 Gy fractions × 3 were determined as the RP2Ds. One patient (4%) experienced a grade 3 dose limiting toxicity event of autoimmune hepatitis. The 3-mo CR occurred in 64% of all patients and in 33%, 85%, and 50% within the D, D + BCG, and D + EBRT cohorts, respectively. Twelve-month CRs were achieved in 46% of all patients and in 73% of D + BCG and 33% of D + EBRT patients.
CONCLUSIONS
D combined with intravesical BCG or EBRT proved feasible and safe in BCG-unresponsive NMIBC patients. Encouraging preliminary efficacy justifies further study of combination therapy approaches.
PATIENT SUMMARY
Durvalumab combination therapy can be safely administered to non-muscle-invasive bladder cancer patients with the goal of increasing durable response rates.
Identifiants
pubmed: 36717286
pii: S0302-2838(23)00025-8
doi: 10.1016/j.eururo.2023.01.017
pmc: PMC10192088
mid: NIHMS1870452
pii:
doi:
Substances chimiques
BCG Vaccine
0
durvalumab
28X28X9OKV
Adjuvants, Immunologic
0
Types de publication
Clinical Trial, Phase I
Multicenter Study
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
486-494Subventions
Organisme : NCI NIH HHS
ID : K08 CA248967
Pays : United States
Organisme : NCI NIH HHS
ID : P30 CA006973
Pays : United States
Organisme : NCI NIH HHS
ID : P30 CA086862
Pays : United States
Organisme : NCI NIH HHS
ID : R01 CA235681
Pays : United States
Organisme : NCI NIH HHS
ID : UM1 CA186691
Pays : United States
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2023 European Association of Urology. Published by Elsevier B.V. All rights reserved.
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