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4

Indication details

Combined Agent(s)
ChT
Control Arm
Placebo plus ChT
Therapeutic Indication
Treatment of locally recurrent unresectable or metastaticTNBC in adults whose tumours express PD-L1 with a CPS ≥ 10 and who have not received prior chemotherapy
Tumour Sub-type
Breast Cancer
Tumour Stage
Locally recurrent inoperable or metastatic
Tumour Sub-Group
Triple-negative, PD-L1 (CPS ≥10)
Trial Name
KEYNOTE-355
NCT Number
NCT02819518
Trial Phase
Phase III

Approval details

FDA Approval
FDA accelerated approval November 2020 regular approval July 2021
EMA Approval
EMA (CHMP) September 2021 EC decision October 2021

Primary Outcome(s)

Primary Outcome(s)
PFS/OS
Evaluated Outcome
OS
Form(s)
Form 2a

Outcome Data

PFS Control
5.6 months
PFS Gain
4.1 months
PFS HR
0.66 (0.50-0.88)
OS Control
16.1 months
OS Gain
6.9 months
OS HR
0.73 (0.55-0.95) P = 0.0185 (reached threshold P <0.0227)

Adjustments

QoL Comment
QoL data pending

Final Score (after adjustments)

Preliminary non-curative score

4

Final non-curative score

4

Scorecard details

ESMO-MCBS version
ESMO-MCBS v1.1
Scorecard ID
239
Scorecard version
1
Issue date
01.03.2020
Last update
14.08.2023
Pembrolizumab KEYNOTE-355

PRELIMINARY SCORE

OS

ADJUSTMENTS

?
QoL data pending
Pembrolizumab KEYNOTE-355

FINAL SCORE

Overall Survival / Disease-Free Survival / Pathological Complete Response
4
Overall Survival
Progression-Free Survival
Non-inferiority (Improved Quality of Life or Reduced Adverse Events) / Response Rate
Overall Response Rate / Duration of Response
Treatment of locally recurrent unresectable or metastaticTNBC in adults whose tumours express PD-L1 with a CPS ≥ 10 and who have not received prior chemotherapy
Pembrolizumab + ChT
Placebo plus ChT

My watchlist

    pdf
    pptx

    Legend

    Information about symbols, abbrevations and color codes

    Red = negative
    Green = positive
    Grey = neutral
    ? Grey + ? = neutral with pending data
    DFS
    Disease-Free Survival
    DoR
    Duration of Response
    EFS
    Event-Free Survival
    HR
    Hazard Ratio
    NEB
    No evaluable benefit
    NI
    Non-inferiority Study
    ORR
    Overall Response Rate
    OS
    Overall Surival
    pCR
    Pathological Complete Response/Remission
    PFS
    Progression-Free Survival
    QoL
    Quality of Life
    RFS
    Relapse-Free Survival
    RR
    Response Rate

    QoL adjustments

    Other adjustments*

    Serious and disabling adverse effects

    Red = negative / deterioration

    Green = positive / improvement

    QoL adjustments

    Red = negative / deterioration

    Green = positive / improvement

    Other adjustments*

    Red = negative / deterioration

    Green = positive / improvement

    Serious and disabling adverse effects

    Red = negative / deterioration

    Green = positive / improvement

    * Other adjustments include:

    - Long-term plateau in the survival curve
    - Long-term plateau in the PFS curve
    - Early stopping or crossover
    - Only improved PFS mature data shows no OS advantage and no improved Qol.

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