Clinical Situation: Maintenance After Recurrence Treatment

Maintenance after therapy for recurrence: Treatment to control disease after complete or partial response to therapy

Progression Free Survival (months)

Median length of time before the cancer comes back or gets worse

Overall Survival (months)

The length of time where half the patients in the study are still alive

2 Prior Therapies 3 Prior Therapies 4 Prior Therapies

Maintenance after therapy for recurrence: Treatment to control disease after complete or partial response to therapy

For more detailed information, please click on the clinical trial ID number.

Drug Class Trial ID # Phase Drugs Clinical Trial Title Key Conclusion and Results
Standard of Care Targeted Drugs
DNA Damage Repair Pathway Inhibitors: PARP NCT01874353; SOLO-2 III Olaparib Prescribing Information Phase III Randomised, Double Blind, Placebo Controlled Study of Olaparib Maintenance Monotherapy in Platinum Sensitive Relapsed BRCA Mutated Ovarian Cancer Patients With a Complete or Partial Response Following Platinum Based Chemotherapy (SOLO-2)

Improved PFS and OS with olaparib maintenance treatment in gBRCA MUT patients

Ola vs Placebo:

PFS: 19.1 vs 5.5 months*
OS: 51.7 vs 38.8 months
TFST: 27.9 vs 7.1 months*

pub 2017, pub 2021, pub 2022
DNA Damage Repair Pathway Inhibitors: PARP NCT01847274; NOVA III Niraparib Prescribing Information A Phase 3 Randomized Double-blind Trial of Maintenance With Niraparib Versus Placebo in Patients With Platinum Sensitive Ovarian Cancer (NOVA)

Improved PFS for gBRCA MUT patients with niraparib maintenance; the benefit of niraparib maintenance therapy extends beyond first progression, but no OS benefit

Nir vs Placebo:

gBRCA MUT:
PFS: 21.0 vs 5.5 months*
OS: 40.9 vs 38.1 months

pub 2016, pub 2019, abs Mar 2021, abs Mar 2023 and presentation
DNA Damage Repair Pathway Inhibitors: PARP NCT01968213; ARIEL3 III Rucaparib Prescribing Information Phase 3 Study of Rucaparib as Switch Maintenance After Platinum in Relapsed High Grade Serous and Endometrioid Ovarian Cancer (ARIEL3)

Improved PFS and PFS2 in BRCA MUT patients, but no OS benefit with rucaparib maintenance

Ruc vs Placebo:

BRCA MUT:
PFS: 16.6 vs 5.4 months*
OS: 45.9 vs 47.8 months

pub 2017, pub 2020, abs Jun 2021 and poster, pub 2021, abs Oct 2022
DNA Damage Repair Pathway Inhibitors: PARP NCT00753545; Study 19 II Olaparib Prescribing Information Phase II Randomised, Double Blind, Multicentre Study to Assess the Efficacy of AZD2281 in the Treatment of Patients With Platinum Sensitive Relapsed Serous Ovarian Cancer Following Treatment With Two or More Platinum Containing Regimens (Study 19)

Improved PFS and OS with olaparib maintenance

Ola vs Placebo:

All:
PFS: 8.4 vs 4.8 months*
OS: 29.8 vs 27.8 months*
BRCA WT:
PFS: 7.4 vs 5.5 months*
OS: 24.5 vs 26.6 months
BRCA MUT:
PFS: 11.2 vs 4.3 months*
OS: 34.9 vs 30.2 months*

pub 2012; 2014; 2016
Drugs in Clinical Development
DNA Damage Repair Pathway Inhibitors: PARP NCT03106987; OReO/ENGOT Ov-38 III Olaparib A Phase IIIb, Randomised, Double-blind, Placebo-controlled, Multicentre Study of Olaparib Maintenance Retreatment in Patients With Epithelial Ovarian Cancer Previously Treated With a PARPi and Responding to Repeat Platinum Chemotherapy

Rechallenge with maintenance olaparib following response to Pt-based therapy provides a significant improvement in PFS vs placebo, irrespective of BRCA status

Ola vs Placebo:

BRCA MUT:
PFS: 4.3 vs 2.8 months*
PFS at 12 months: 19 vs 0%

non-BRCA MUT:
PFS: 5.3 vs 2.8 months*
PFS at 12 months: 12 vs 0%

abs Sept 2021
*Statistically significant result

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