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2015 ; 51
(14
): 1865-73
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gab.com Text
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Results of a phase 1 trial combining ridaforolimus and MK-0752 in patients with
advanced solid tumours
#MMPMID26199039
Piha-Paul SA
; Munster PN
; Hollebecque A
; Argilés G
; Dajani O
; Cheng JD
; Wang R
; Swift A
; Tosolini A
; Gupta S
Eur J Cancer
2015[Sep]; 51
(14
): 1865-73
PMID26199039
show ga
BACKGROUND: The phosphatidylinositol 3-kinase/protein kinase-B/mammalian target
of rapamycin (PI3K-AKT-mTOR) signalling pathway is aberrantly activated in
several cancers. Notch signalling maintains cell proliferation, growth and
metabolism in part by driving the PI3K pathway. Combining the mTOR inhibitor
ridaforolimus with the Notch inhibitor MK-0752 may increase blockade of the PI3K
pathway. METHODS: This phase I dose-escalation study (NCT01295632) aimed to
define the dose-limiting toxicities (DLTs) and maximum tolerated dose (MTD) of
combination oral ridaforolimus (rising doses starting at 20 mg, 5 days/week) and
oral MK-0752 (1800 mg once weekly) in patients with solid tumours. No
intrapatient dose escalation was permitted. RESULTS: Twenty eight patients were
treated on study. Ridaforolimus doses were escalated from 20 to 30 mg/day. Among
14 evaluable patients receiving ridaforolimus 20 mg, one DLT (grade 2 stomatitis,
second episode) was reported. Among eight evaluable patients receiving
ridaforolimus 30 mg, three DLTs were reported (one each grade 3 stomatitis, grade
3 diarrhoea, and grade 3 asthenia). The MTD was 20 mg daily ridaforolimus 5
days/week+1800 mg weekly MK-0752. The most common drug-related adverse events
included stomatitis, diarrhoea, decreased appetite, hyperglycaemia,
thrombocytopenia, asthenia and rash. Two of 15 (13%) patients with head and neck
squamous cell carcinoma (HNSCC) had responses: one with complete response and one
with partial response. In addition, one patient experienced stable disease ?6
months. CONCLUSIONS: Combined ridaforolimus and MK-0752 showed activity in HNSCC.
However, a high number of adverse events were reported at the MTD, which would
require careful management during future clinical development.
|Administration, Oral
[MESH]
|Adult
[MESH]
|Aged
[MESH]
|Aged, 80 and over
[MESH]
|Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use
[MESH]