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Articles by M Fukuoka
Total Records ( 3 ) for M Fukuoka
  T Satoh , I Okamoto , M Miyazaki , R Morinaga , A Tsuya , Y Hasegawa , M Terashima , S Ueda , M Fukuoka , Y Ariyoshi , T Saito , N Masuda , H Watanabe , T Taguchi , T Kakihara , Y Aoyama , Y Hashimoto and K. Nakagawa
 

Purpose: YM155, a novel molecular targeted agent, suppresses survivin, a member of the inhibitor of apoptosis protein family that is overexpressed in many tumor types. The aim of this study was to determine the maximum tolerated dose (MTD) and to assess the safety, pharmacokinetics, and antitumor activity of YM155 in patients with advanced refractory solid tumors.

Experimental Design: Patients with advanced refractory solid tumors were treated with escalating doses of YM155 administered by continuous i.v. infusion for 168 hours in 21-day cycles.

Results: Of the 34 patients enrolled, 33 (median age, 59 years) received at least 1 dose of YM155 (range, 1-19 cycles). The dose levels studied were 1.8, 3.6, 4.8, 6.0, 8.0, and 10.6 mg/m2/d. The MTD was determined to be 8.0 mg/m2/d, based on a dose-limiting toxicity of increased blood creatinine observed in 2 patients receiving 10.6 mg/m2/d. The most common adverse reactions judged to be related to YM155 were urine microalbumin present; fever; injection-site phlebitis; fatigue; and decreased hemoglobin/anemia, blood albumin, and lymphocyte count. The pharmacokinetic profile was almost linear over the dosing range and was similar between cycles 1 and 2. Urinary excretion of YM155 showed no definite difference among doses. Stable disease was achieved in nine patients.

Conclusions: YM155 was safely administered to patients with advanced refractory solid tumors by 168-hour continuous i.v. infusion in 21-day cycles. The MTD was determined to be 8.0 mg/m2/d. The safety profile, plasma concentrations achieved, and antitumor activity observed merit further studies with this survivin suppressant, alone and in combination regimens.

  N Yamamoto , I Sekine , K Nakagawa , M Takada , M Fukuoka , Y Tanigawara and N. Saijo
  Objective

The aim of this study was to investigate the safety, pharmacokinetic and pharmacodynamic profiles of pegfilgrastim (KRN125), a long-acting granulocyte colony-stimulating factor, in lung cancer patients with chemotherapy-induced neutropenia.

Methods

Eighteen Japanese lung cancer patients who had experienced severe neutropenia (absolute neutrophil counts <0.5 x 109 cells/l) were enrolled. Six patients were sequentially enrolled in each pegfilgrastim dose cohort (dose levels of 30, 60 or 100 µg/kg). Patients received the same chemotherapy regimen as in their previous cycle and pegfilgrastim was injected subcutaneously the day after chemotherapy ended in each treatment cycle. Pharmacokinetic, pharmacodynamic and safety analyses were performed.

Results

Dose-limiting toxicity and serious adverse events related to pegfilgrastim were not observed in any patients. Pegfilgrastim antibodies were not detected. Maximum serum concentrations and area under the serum concentration–time curves of pegfilgrastim were dependent on the pegfilgrastim dose in a non-linear manner. Of the 18 patients, severe neutropenia occurred in 4 (22.2%), and, of these, 1 patient (5.5%) required rescue treatment by filgrastim.

Conclusions

A single dose of pegfilgrastim increases the serum concentration of pegfilgrastim for several days in a dose-dependent manner and is not associated with significant toxicity. Good efficacy of pegfilgrastim for the prevention of severe neutropenia was observed at all dose levels. Based on these data, further studies are warranted to determine the recommended dose of pegfilgrastim for Japanese patients with chemotherapy-induced neutropenia.

  K Okamoto , I Okamoto , K Takezawa , I Tachibana , M Fukuoka , Y Nishimura and K. Nakagawa
  Objective

The optimal management of elderly patients with limited-disease small cell lung cancer (LD-SCLC) has not been established.

Methods

The records of elderly (≥70 years of age) patients with LD-SCLC who had been treated with etoposide and cisplatin chemotherapy with early concurrent twice-daily thoracic radiotherapy (TRT) were reviewed retrospectively.

Results

Of the 25 elderly patients with LD-SCLC identified, 12 (48%) individuals received etoposide–cisplatin chemotherapy with early concurrent twice-daily TRT. The main toxicities of this treatment regimen were hematologic, with neutropenia of Grade 4 being observed in all patients and febrile neutropenia of Grade 3 in eight patients during the first cycle of chemoradiotherapy. The toxicity of TRT was acceptable, with all patients completing the planned radiotherapy within a median of 29 days (range, 19–33). No treatment-related deaths were observed. The median progression-free survival and overall survival times were 14.2 months (95% confidence interval, 4.3–18.2) and 24.1 months (95% confidence interval, 11.3–27.2), respectively.

Conclusions

Etoposide–cisplatin chemotherapy with early concurrent twice-daily TRT was highly myelotoxic in elderly patients with LD-SCLC, although no treatment-related deaths were observed in our cohort. Prospective studies are required to establish the optimal schedule and dose of chemotherapy and TRT in such patients.

 
 
 
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