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Table 1 Phase I/II clinical trials of some Akt inhibitors

From: Targeting Akt in cancer for precision therapy

Trial ID

Official title

Akt inhibitor

Combination

Cancer type

Phase

Efficacy

Grade ≧ 3 adverse effects

Ref

NCT01042379

ISPY-2

MK-2206

Neoadjuvant chemotherapy

Breast cancer

II

Estimated pCR: 61.8% with MK-2206 versus 35% with control for hormone receptor-negative/HER2-positive breast cancer

Rash: 22.6% (MK-2206) versus 0 (control);

Hyperglycemia: 4.3% (MK-2206) versus 0 (control)

[181]

NCT02162719

LOTUS

Ipatasertib

Paclitaxel

Metastatic TNBC

II

Median PFS: 6.2 m with ipatasertib versus 4.9 m with placebo;

Median PFS in the PIK3CA/AKT/PTEN-altered population: 9.0 m with ipatasertib versus 4.9 m with placebo;

Median PFS in the PIK3CA/AKT/PTEN-non-altered population: 5.3 m with ipatasertib versus 3.7 m with placebo;

Median OS: 23.1 m with ipatasertib versus 16.2 m with placebo in the PIK3CA/AKT/PTEN-altered population

Rash: 2% (ipatasertib) versus 0 (placebo);

Neutropenia: 10% (ipatasertib) versus 2% (placebo)

[183]

NCT02301988

FAIRLANE

Ipatasertib

Paclitaxel

Stage I-IIIa TNBC

II

pCR: 17% with ipatasertib versus 13% with placebo in the overall population; 16% with ipatasertib versus 13% (placebo) in the PTEN-low population; 18% with ipatasertib versus 12% (placebo) in the PIK3CA/AKT/PTEN-altered population;

rCR: 39% with ipatasertib versus 9% (placebo) in the PIK3CA/AKT/PTEN-altered population

Diarrhea: 17% versus 1%Hyperglycemia: 0 versus 0;

Rash: 1% versus 1%

[194]

NCT01485861

N.A

Ipatasertib

Abiraterone

Metastatic castration- resistant prostate cancer

II

rPFS: 8.31 m with ipatasertib (200 mg) versus 6.37 m with placebo in molecularly unstratified population; Median OS: 21.5 m with ipatasertib (200 mg) versus 15.64 m with placebo;

rPFS:11.1 m with ipatasertib (200 mg) versus 4.6 m with placebo in PTEN-loss population; 4.6 m with ipatasertib (200 mg) versus 5.6 m with placebo in PTEN-non-loss population

Diarrhea: 14.3% (400 mg ipatasetib), 3.4% (200 mg ipatasertib) versus 1.2% (placebo);

Asthenia: 7.2% (400 mg ipatasetib), 1.1% (200 mg ipatasertib) versus 1.2% (placebo)

[195]

NCT01625286

BEECH

Capivasertib

Paclitaxel

ER +/HER− metastatic breast cancer

II

PFS: 10.9 m with capivasertib versus 8.4 m with placebo in the overall population;

PFS: 10.9 m with capivasertib versus 10.8 m with placebo in the PIK3CA-mutated population

Diarrhea: 22% with capivasertib versus 2% with placebo;

Hyperglycemia:13% with capivasertib versus 0% with placebo;

Maculopapular rash: 9% with capivasertib versus 0% with placebo

[186]

NCT01992952

FAKTION

Capivasertib

Fulvestrant

Aromatase inhibitor-resistant, advanced ER+/HER2− breast cancer

II

PFS: 10.3 m with capivasertib plus fulvestrant versus 4.8 m with placebo plus fulvestrant in the overall population;

Objective response: 29% in capivasertib group versus 8% in placebo group;

CBR: 55% in capivasertib group versus 41% in placebo group;

PFS: 10.3 m with capivasertib plus fulvestrant versus 4.8 m with placebo plus fulvestrant in the PI3K/PTEN pathway-nonaltered population;

PFS: 9.5 m with capivasertib plus fulvestrant versus 5.2 m with placebo plus fulvestrant in the PI3K/PTEN pathway-altered population;

OS: 30.5 m with capivasertib plus fulvestrant versus 18.7 m with placebo plus fulvestrant in the PI3K/PTEN pathway-altered population;

23.7 m with capivasertib plus fulvestrant versus 20.3 m with placebo plus fulvestrant in the PI3K/PTEN pathway-nonaltered population

Hypertension: 32% in capivasertib group versus 24% in placebo group

Diarrhea: 14% in capivasertib group versus 4% in placebo group;

Rash: 20% in capivasertib group versus 0 in placebo group;

Infection: 6% in capivasertib group versus 3% in placebo group

[187]

NCT02423603

PAKT

Capivasertib

Paclitaxel

Untreated metastatic TNBC

II

PFS: 5.9 m with capivasertib plus paclitaxel versus 4.2 m with placebo plus paclitaxel in the overall population;

PFS: 9.3 m with capivasertib plus paclitaxel versus 3.7 m with placebo plus paclitaxel in the PIK3CA/AKT1/PTEN-altered population;

PFS: 5.3 m with capivasertib plus paclitaxel versus 4.4 m with placebo plus paclitaxel in the PIK3CA/AKT1/PTEN-nonaltered population;

OS: 19.1 m with capivasertib plus paclitaxel versus 12.6 m with placebo plus paclitaxel in the overall population;

Median duration of response: 13.3 m with capivasertib plus paclitaxel versus 3.5 m with placebo plus paclitaxel in the PIK3CA/AKT1/PTEN-altered population

Diarrhea: 13% (capivasertib) versus 1% (placebo);

Rash: 4% (capivasertib) versus 0% (placebo)

Infection: 4% (capivasertib) versus 0% (placebo)

Hyperglycemia: 1.5% with capivasertib versus 0% with placebo

[191]

NCT01226316

N.A

Capivasertib

None

Akt1 E17K mutant tumors

II

Median PFS: 5.5 m in ER+ breast cancer patients; 6.6 m in gyneologic cancer papatients; 4.2 m in other cancer patients

Hyperglycemia: 24%; diarrhea: 17%; rash: 15.5% Discontinuation rate: 12%

[199]

NCT01226316

N.A

Capivasertib

Fulvestrant

Akt1 E17K mutant/ER+ metastatic breast cancer

I

Combination therapy: ORR, 36%; CBR24, 50% in fulvestrant-pretreated patients; ORR, 20%; CBR24, 47% in fulvestrant-naïve patients.

Capivasertib monotherapy: ORR, 20%

Hyperglycemia: 30%;

Rash: 20%

[201]

NCT00700882

NCI-MATCH

(EAY131-Y)

Capivasertib

None

Akt1 E17K mutated metastatic tumor

II

ORR: 28.6%; CR: 1/35; PR: 9/35; Median duration of response: 4.4 m; SD: 46%; PD: 2/35; Median PFS: 5.5 m; Overall 6-month PFS: 50%; Median OS: 14.5 m

Hyperglycemia: 26%;

Maculopapular rash: 11%

[200]

NCT02299648

VICTORY

Capivasertib

Paclitaxel

PIK3CA-mutated/amplified gastric cancer

N.A

ORR: 33.3% (8/24);

50% in PIK3CA E542K mutant population,

18.8% in the non-E542K cohort

 

[202]

  1. CBR: clinical benefit rate; CR: complete response; ORR: objective response rate; OS: overall survival; pCR: pathologic complete response; PFS: progression-free survival; rPFS: radiographic progression-free survival; SD: stable disease; N.A.: not available