Phase I clinical and pharmacokinetic trial of penclomedine using a novel, two-stage trial design for patients with advanced malignancy.

1998 ◽  
Vol 16 (3) ◽  
pp. 1142-1149 ◽  
Author(s):  
J Berlin ◽  
J A Stewart ◽  
B Storer ◽  
K D Tutsch ◽  
R Z Arzoomanian ◽  
...  
Keyword(s):  
Phase I ◽  
Trial Design ◽  
Fibonacci Sequence ◽  
Maximum Tolerated Dose ◽  
Hematologic Toxicity ◽  
Two Stage ◽  
Eligibility Criteria ◽  
Stage Design ◽  
Advanced Malignancy ◽  
Elimination Half

PURPOSE A novel phase I trial design was used to determine the maximum-tolerated dose (MTD) and pharmacokinetics for penclomedine when administered as an intravenous (i.v.) infusion over 1 hour daily for 5 days, repeated every 28 days. This study also tests the feasibility of a novel two-stage design for phase I trials. PATIENTS AND METHODS Twenty-eight patients with advanced malignancy who met standard eligibility criteria were treated with i.v. penclomedine. The initial daily dose was 50 mg/m2. Dose escalations were planned using a modified Fibonacci sequence. One patient was enrolled on each dose level during the first stage of this trial. In the second stage, patients were enrolled in cohorts of three, proceeding in an up-and-down manner based on toxicities observed. MTD was determined by logistic regression analysis. Pharmacokinetic assessment was performed during the first cycle of treatment. RESULTS Dose-limiting toxicities (DLT) observed during this trial were principally neurologic and were self-limited. Although hematologic toxicity was rare, the few patients with significant hematologic changes experienced late nadirs with prolonged time to recovery. The MTD was estimated as 381 mg/m2 (80% CI, 343 to 415 mg/m2). Although there was a long elimination half-life, accumulation of penclomedine over the 5 days of administration was negligible. CONCLUSION The novel trial design used in this study was safe and appeared effective in limiting the numbers of patients treated at lower-dose levels. Reversible neurotoxicity was dose-limiting. Although the estimated MTD was 381 mg/m2, any dose within the CI would be reasonable for phase II study.

Phase I study of vorinostat (suberoylanilide hydroxamic acid) in combination with temozolomide (TMZ) in patients with malignant gliomas (NABTC 04–03)

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 2039-2039 ◽  
Author(s):  
P. Y. Wen ◽  
V. Puduvalli ◽  
J. Kuhn ◽  
J. Reid ◽  
T. Cloughesy ◽  
...  
Keyword(s):  
Phase I ◽  
Phase I Study ◽  
Malignant Gliomas ◽  
Maximum Tolerated Dose ◽  
Hematologic Toxicity ◽  
Eligibility Criteria ◽  
The North ◽  
Anaplastic Gliomas ◽  
Grade 3 ◽  
Glucuronide Metabolite

2039 Background: Vorinostat (V) is an oral inhibitor of histone deacetylase. In preclinical studies it inhibits growth of glioblastoma (GBM) cell lines and has supra-additive activity when combined with TMZ. Methods: The North American Brain Tumor Consortium (NABTC) is conducting a phase I study of V in combination with TMZ in patients with malignant gliomas (MG). Eligibility criteria are histologically proven GBM and anaplastic gliomas (AG) who have received radiotherapy and have not progressed on temozolomide, > 18 yrs old, life expectancy > 8 weeks, KPS > 60, adequate bone marrow reserve and organ function. There was no limitation to the type of antiepileptic drugs that could be used. All patients received TMZ at a dose of 150 mg/m2/day on days 1–5 days every 28 days. Variable doses of V were administered with food on days 1–14 every 28 days. Dose-limiting toxicities (DLT), determined during the first 4 weeks of therapy, were defined as any grade 4 hematologic toxicity except for grade 3 thrombocytopenia, and any grade 3 non-hematologic toxicities. Escalation was performed in standard groups of 3. The maximum tolerated dose (MTD) was defined as the dose at which DLTs occurred in no more than 1/6 patients. PKs were determined on cycle 1 for TMZ, V and its metabolites. Results: To date, 19 eligible patients have been enrolled (15 GBM; 4 AG). Patients’ characteristics are 11 male, 8 female; median age 54 yrs (36–78); median KPS 90 (70–100). DLTs were encountered at 300 mg bid of vorinostat (1 grade 3 thrombocytopenia; 1 grade 3 fatigue in 3 patients), 200 mg tid (1 grade 3 nausea, 1 grade 4 thrombocytopenia in 3 patients) and 200 mg twice daily (grade 3 fatigue in 2/6 patients). No DLTs were encountered in 6 patients receiving 300 mg daily. TMZ PKs included [n=16: Cmax 5.2 (± 1.55) μg/ml; AUC 20.1 (±4.66) μg x hr/ml; t1/2 1.9 (±0.32)/hr]. Vorinostat PKs (300mg dose level) were [n=4; Cmax 267 (±174) ng/ml; AUC0–8 603 (±197) ng x hr/ml]. The t1/2 for V and its glucuronide metabolite were identical (1.6 hrs) vs. 5.6 hrs for the acid metabolite. Conclusions: The MTD of vorinostat in combination with TMZ is 300 mg daily on days 1–14 every 28 days. Final PK results, and toxicities from an additional 10 patients enrolled at the MTD will be presented. [Table: see text]

Phase I clinical and pharmacokinetic study of oral carboxyamidotriazole, a signal transduction inhibitor.

1997 ◽  
Vol 15 (2) ◽  
pp. 781-789 ◽  
Author(s):  
J Berlin ◽  
K D Tutsch ◽  
P Hutson ◽  
J Cleary ◽  
R P Rago ◽  
...  
Keyword(s):  
Side Effects ◽  
Phase I ◽  
Peak Plasma ◽  
Plasma Concentrations ◽  
Maximum Tolerated Dose ◽  
Eligibility Criteria ◽  
Advanced Malignancy ◽  
Gastrointestinal Side Effects ◽  
Dose Levels ◽  
Trough Plasma

PURPOSE We conducted a phase I trial of carboxyamidotriazole (CAI, NSC 609974), designed to determine the maximum-tolerated dose (MTD), toxicity profile, and pharmacokinetic characteristics of CAI gelatin capsule (gelcap) formulation administered daily as a single oral dose. PATIENTS AND METHODS Twenty-nine patients with advanced malignancy who met standard eligibility criteria were treated with once-daily CAI given in cycles of 28 days. Pharmacokinetic sampling was performed on days 1 and 29 and trough plasma CAI levels were assessed weekly. RESULTS Patients were entered at dose levels of 50, 75, and 100 mg/m2. All three patients at the 100-mg/m2 level experienced dose-limiting neurocerebellar toxicity. Other neurotoxicities were mild. Gastrointestinal side effects were common, but generally mild, with 23 patients experiencing nausea and/or vomiting of any grade. Fatigue was a frequent complaint, with 19 patients experiencing mild to moderate symptoms. Six patients with nausea and vomiting and five with fatigue experienced relief of symptoms with a change to nocturnal administration of CAI. Peak plasma concentrations (Cp) occurred at 2.4 +/- 1.5 hours after administration of the oral gelcap dose. Patients approached steady-state trough plasma concentrations (Css) by days 8 to 15 and maintained a relatively constant Css throughout the course of treatment. For all patients, the mean variation in weekly CAI Cp was 12.4% +/- 5.3%. CONCLUSION The MTD for the gelcap formulation was 75 mg/m2 with dose-limiting neurocerebellar toxicity (ataxia) seen at 100 mg/m2. Other prominent side effects, including nausea, vomiting, and fatigue, were partially alleviated through altering the administration schedule to nighttime dosing.

Phase I study of erlotinib and CCI-779 (temsirolimus) for patients with recurrent malignant gliomas (MG) (NABTC 04–02)

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 2057-2057 ◽  
Author(s):  
H. I. Robins ◽  
P. Y. Wen ◽  
S. M. Chang ◽  
J. Kuhn ◽  
K. Lamborn ◽  
...  
Keyword(s):  
Phase I ◽  
Single Agent ◽  
Malignant Gliomas ◽  
Mtor Inhibitors ◽  
Patient Characteristics ◽  
Maximum Tolerated Dose ◽  
Hematologic Toxicity ◽  
Eligibility Criteria ◽  
The North ◽  
Anaplastic Gliomas

2057 Background: Glioblastomas (GBM) frequently have amplification/mutation of EGFR and inactivation of PTEN. Although single agent EGFR and mTOR inhibitors have only modest activity, there is a rationale for combinations of these agents. Methods: The North American Brain Tumor Consortium (NABTC) is conducting a phase I/II study of the EGFR inhibitor erlotinib in combination with the mTOR inhibitor CCI-779 in recurrent MG. Eligibility criteria were histologically proven GBM and anaplastic gliomas (AG), radiologic progression, > 18 yrs old, KPS > 60, adequate bone marrow reserve and organ function. Patients (pts) must not be receiving enzyme inducing antiepileptic drugs. The dose of erlotinib was fixed at 150 mg/d. Patients initially received CCI-779 50 mg intravenously once weekly and the dose was adjusted based on toxicities. Dose-limiting toxicities (DLT), determined during the first 4 weeks of therapy, were defined as any grade (G) 4 hematologic toxicity except for G3 thrombocytopenia, and any G3 or unacceptable G2 non-hematologic toxicities. Escalation was performed in groups of 3. The maximum tolerated dose (MTD) was defined as the dose at which DLTs occurred in no more than 1/6 pts. Results: To date 22 eligible pts have been enrolled (15 GBM; 7 AG). Patient characteristics were 12 male, 10 female; median age: 54 (26–74); median KPS 90 (70–100); median prior chemotherapy regimens 1 (0–3). Two of 3 pts receiving 50 mg of CCI-779 developed DLTs (intolerable G2 rash & mucositis, & G3 liver function abnormalities; G3 rash & dehydration). Three of 6 pts receiving 25 mg of CCI-779 weekly experienced DLTs (G3 rash; G3 rash, diarrhea, dehydration; G3 mucositis & infection). Two of 6 patients receiving weekly 15 mg of CCI-779 experienced G3 rash. The protocol was amended to define a DLT only if > G3 toxicities persisted despite maximal therapy. Six additional pts were treated at 15 mg of CCI-779. One of 6 pts developed a G3 rash. Conclusions: The combination of erlotinib and CCI-779 was associated with a higher than expected incidence of rash and mucositis. The MTD for this combination is likely to be 150 mg/d of erlotinib and 15 mg/d of CCI-779. Final pharmacokinetics and response data will be presented. No significant financial relationships to disclose.

Phi-53: (NCI#7251): Phase I trial of belinostat (PXD101) in combination with 13-cis-retinoic acid (13c-RA) in advanced solid tumor malignancies—A California Cancer Consortium NCI/CTEP sponsored trial.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 2526-2526 ◽  
Author(s):  
Thehang H. Luu ◽  
Paul Henry Frankel ◽  
Dean Lim ◽  
Mihaela C. Cristea ◽  
Jan Hendrik Beumer ◽  
...  
Keyword(s):  
Retinoic Acid ◽  
Phase I ◽  
Solid Tumors ◽  
Single Agent ◽  
Maximum Tolerated Dose ◽  
Hematologic Toxicity ◽  
Qtc Interval ◽  
Advanced Solid Tumors ◽  
Eligibility Criteria ◽  
Grade 3

2526 Background: Belinostat has a reported maximum tolerated dose (MTD) of 1,000 mg/m2 given days 1 to 5 every 21 days as a single agent, although in one study in hepatocellular carcinoma belinostat was given at 1,400 mg/m2on the same schedule. Pre-clinical evidence suggests HDAC inhibitors enhance retinoic acid signaling with a synergistic impact in a variety of solid tumors. We conducted a phase I study of belinostat and 13c-RA in advanced solid tumors. Methods: Dose limiting toxicity (DLT) was defined as cycle 1 hematologic toxicity: ≥grade 3 that not resolved to <grade 1 within 1 week or non-hematologic toxicity: ≥grade 3. We sought the MTD of belinostat days 1-5 with 13-cRA days 1-14, every 21 days, in patients (pt) with advanced solid tumors. Eligibility criteria included normal organ function and QT/QTc interval; 4 weeks from previous therapy. Results: 51 pt were treated: median age 61 (range 40-80); 29 men; 57% ECOG 0, 41% ECOG 1, 2% ECOG 2; 13 lung, 11 breast, 8 colorectal, 3 pancreatic. 11 dose levels (DL) were tested starting from belinostat 600 mg/m2/day and 13c-RA 50 mg/m2/day to belinostat 2000 mg/m2/day and 13c-RA 100 mg/m2/day. Only two DLTs were observed: a grade 3 hypersensitivity reaction with dizziness and hypoxia at DL 8 (belinostat 1700 mg/m2/day, 13c-RA 100 mg/m2/day); and a grade 3 allergic reaction in a patient with an ECOG PS 2 at DL 11 (belinostat 2000 mg/m2/day, 13c-RA 100 mg/m2/day). The MTD was not reached. Pharmacokinetics of belinostat suggests dose proportionality. Median number of cycles: 2 (range 1–56). 10 patients had SD including: 1 neuroendocrine pancreatic stable for 56 cycles; 1 breast pt for 12 cycles; 1 lung pt 8 cycles. 2 pt had PRs: a keratinizing squamous cell carcinoma (tonsil) and a lung cancer pt. Conclusions: Belinostat 2000 mg/m2 days 1-5and 13-cis-Retinoic acid 100 mg/m2days 1-14, every 21 days, was well-tolerated and an MTD was not reached despite doubling the established single agent MTD. Future studies building on this combination to belinostat are warranted. Support: U01CA062505 and P30CA033572 (City of Hope); U01CA099168 and P30CA047904 (University of Pittsburgh).

Plasma pharmacokinetics and pharmacodynamics of a new prodrug N-l-leucyldoxorubicin and its metabolites in a phase I clinical trial.

1992 ◽  
Vol 10 (12) ◽  
pp. 1897-1906 ◽  
Author(s):  
J de Jong ◽  
G J Geijssen ◽  
C N Munniksma ◽  
J B Vermorken ◽  
W J van der Vijgh
Keyword(s):  
Clinical Trial ◽  
Phase I ◽  
Half Life ◽  
Maximum Tolerated Dose ◽  
Phase I Clinical Trial ◽  
Major Constituent ◽  
Hematologic Toxicity ◽  
Time Curve ◽  
Elimination Half Life ◽  
Elimination Half

PURPOSE N-l-leucyldoxorubicin (Leu-Dox) was developed as a prodrug of doxorubicin (Dox) to circumvent the cardiotoxicity associated with repeated administration of Dox. Our purpose was to assess the pharmacokinetics of Leu-Dox, Dox, doxorubicinol (Dol) and four other metabolites for pharmacokinetically guided dose-escalation and to verify the prodrug character of Leu-Dox. PATIENTS AND METHODS Blood and urine of 14 patients were sampled during the phase I clinical trial and analyzed by high-performance liquid chromatography. Dose levels of Leu-Dox ranged from 18 mg/m2 to 225 mg/m2, the maximum-tolerated dose (MTD). Hematologic parameters were monitored regularly in each patient. RESULTS Leu-Dox was rapidly distributed (half-life at alpha phase [t1/2 alpha] = 2.5 +/- 0.6 minutes) followed by a biphasic elimination (half-life at beta phase [t1/2 beta] = 17.4 +/- 7.3 minutes; half-life at gamma phase [t1/2 gamma] = 1.5 +/- 0.5 hours), as measured over the first 12 hours after administration. In three patients, in whom Leu-Dox was found in the plasma for up to 48 hours after injection, a final elimination half-life (t1/2,elim) of 16 hours was observed. The t1/2,elim of Leu-Dox was short (0.6 to 16.5 hours) compared with the t1/2,elim of Dox (38 +/- 11 hours). The mean residence time and apparent volume of distribution were 23 +/- 5 minutes and 19 +/- 6 L/m2, respectively. Only 1.5% to 5% of the dose was excreted in the urine over 48 hours, with Dox as major constituent. Dox was rapidly formed, reaching its maximum concentration within 10 minutes after the end of Leu-Dox infusion. Areas under the plasma concentration versus time curve (AUC infinity, mean +/- SD, n = 16) of Leu-Dox, Dox, and Dol were 115 +/- 27 mumol.min/L, 41 +/- 12 mumol.min/L, and 33 +/- 14 mumol.min/L after a dose of 60 mg/m2 Leu-Dox (= 86 mumol/m2). After the same molar dose of Dox (50 mg/m2 = 86 mumol/m2), the AUC infinity of Dox was 179 mumol.min/L, indicating that Leu-Dox was converted into Dox for 23% in the plasma compartment. The AUCs infinity of Leu-Dox, Dox, and Dol increased linearly with the dose. Negligible AUCs were observed for the other four metabolites. The AUCs infinity of Leu-Dox and Dox at the MTD (517 and 145 mumol.min/L, respectively) were lower than those in mice at the LD10 (1,930 and 798 mumol.min/L, respectively), which means that the MTD could not be predicted from the preclinical pharmacokinetics in mice. Hematologic toxicity, especially the WBC count, appeared to correlate much better with the AUC of Dox (r = .91) than with the AUC of Leu-Dox (r = .74), thus confirming the prodrug character of Leu-Dox. CONCLUSIONS Dox is rapidly formed from Leu-Dox, and seems causative in the observed myelotoxicity. The MTD could not be predicted from the AUC at the LD10 in mice.

scholarly journals Phase I and Correlative Biology Study of Cilengitide in Patients With Recurrent Malignant Glioma

2007 ◽  
Vol 25 (13) ◽  
pp. 1651-1657 ◽  
Author(s):  
L. Burt Nabors ◽  
Tom Mikkelsen ◽  
Steven S. Rosenfeld ◽  
Fred Hochberg ◽  
Narasimha S. Akella ◽  
...  
Keyword(s):  
Phase I ◽  
Malignant Glioma ◽  
Complete Response ◽  
Maximum Tolerated Dose ◽  
Toxicity Assessment ◽  
Perfusion Magnetic Resonance Imaging ◽  
Hematologic Toxicity ◽  
Recurrent Malignant Glioma ◽  
Time Curve ◽  
Magnetic Resonance Imaging Mri

Purpose This multi-institutional phase I trial was designed to determine the maximum-tolerated dose (MTD) of cilengitide (EMD 121974) and to evaluate the use of perfusion magnetic resonance imaging (MRI) in patients with recurrent malignant glioma. Patients and Methods Patients received cilengitide twice weekly on a continuous basis. A treatment cycle was defined as 4 weeks. Treatment-related dose-limiting toxicity (DLT) was defined as any grade 3 or 4 nonhematologic toxicity or grade 4 hematologic toxicity of any duration. Results A total of 51 patients were enrolled in cohorts of six patients to doses of 120, 240, 360, 480, 600, 1,200, 1,800, and 2,400 mg/m2 administered as a twice weekly intravenous infusion. Three patients progressed early and were inevaluable for toxicity assessment. The DLTs observed were one thrombosis (120 mg/m2), one grade 4 joint and bone pain (480 mg/m2), one thrombocytopenia (600 mg/m2) and one anorexia, hypoglycemia, and hyponatremia (800 mg/m2). The MTD was not reached. Two patients demonstrated complete response, three patients had partial response, and four patients had stable disease. Perfusion MRI revealed a significant relationship between the change in tumor relative cerebral blood flow (rCBF) from baseline and area under the plasma concentration versus time curve after 16 weeks of therapy. Conclusion Cilengitide is well tolerated to doses of 2,400 mg/m2, durable complete and partial responses were seen in this phase I study, and clinical response appears related to rCBF changes.

Phase I study of repeated cycles of high-dose cyclophosphamide, etoposide, and cisplatin administered without bone marrow transplantation.

1990 ◽  
Vol 8 (10) ◽  
pp. 1728-1738 ◽  
Author(s):  
J A Neidhart ◽  
W Kohler ◽  
C Stidley ◽  
A Mangalik ◽  
A Plauche ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Phase I ◽  
Performance Status ◽  
Complete Response ◽  
High Dose ◽  
Hematologic Toxicity ◽  
Tumor Type ◽  
Advanced Malignancy ◽  
Prior Therapy ◽  
And Performance

Forty-two patients with advanced malignancy judged unlikely to respond to standard treatment received high-dose combination chemotherapy with cyclophosphamide, etoposide, and cisplatin in a phase I trial. Twenty-two of these patients who had at least a partial response (PR) to the first cycle of therapy received a second cycle, and eight patients received three or more cycles of therapy. Bone marrow replacement was not used. The maximum-tolerated doses (MTDs) were cyclophosphamide 2.5 g/m2 on days 1 and 2; etoposide 500 mg/m2 on days 1, 2, and 3; and cisplatin 50 mg/m2 on days 1, 2, and 3. Hematologic toxicity was not dose-limiting by study design. Recovery to an absolute granulocyte count above 100/microL occurred at a median of 9 days from onset (range, 3 to 23 days) at the MTD. Recovery was delayed after the third cycle. Only one patient on his third cycle failed to recover peripheral blood counts and died of sepsis an day 43. Hematologic toxicity was not dose-dependent. Nonhematologic toxicities included emesis, fatigue, alopecia, diarrhea, and anorexia and were generally well tolerated. The dose-limiting toxicities were fatal pulmonary or cardiac toxicities in five of nine patients treated at the highest dose level. Patients likely to do well can be selected by tumor type, response to prior therapy, and performance status. Nine of 36 assessable patients had a complete response (CR) and 13 a PR for a response rate of 61%. Five patients (12%) remain alive and free of disease at 15 to 32 months. Repeated cycles of dose-intensive combination therapy can produce long-term disease-free remissions in patients with refractory tumor types. The toxicity of the regimen is acceptable if patients are carefully selected.

Phase I and Pharmacokinetic Study of Docetaxel and Irinotecan in Patients With Advanced Solid Tumors

2000 ◽  
Vol 18 (20) ◽  
pp. 3545-3552 ◽  
Author(s):  
Corinne Couteau ◽  
Marie-Laure Risse ◽  
Michel Ducreux ◽  
Florence Lefresne-Soulas ◽  
Alessandro Riva ◽  
...  
Keyword(s):  
Febrile Neutropenia ◽  
Phase I ◽  
Solid Tumors ◽  
Pharmacokinetic Study ◽  
Topoisomerase I ◽  
Maximum Tolerated Dose ◽  
Hematologic Toxicity ◽  
Advanced Solid Tumors ◽  
Phase Ii Studies ◽  
Grade 3

PURPOSE: We conducted a phase I and pharmacokinetic study of docetaxel in combination with irinotecan to determine the dose-limiting toxicity (DLT), the maximum-tolerated dose (MTD), and the dose at which at least 50% of the patients experienced a DLT during the first cycle, and to evaluate the safety and pharmacokinetic profiles in patients with advanced solid tumors. PATIENTS AND METHODS: Patients with only one prior chemotherapy treatment (without taxanes or topoisomerase I inhibitors) for advanced disease were included in the study. Docetaxel was administered as a 1-hour IV infusion after premedication with corticosteroids followed immediately by irinotecan as a 90-minute IV infusion, every 3 weeks. No hematologic growth factors were allowed. RESULTS: Forty patients were entered through the following seven dose levels (docetaxel/irinotecan): 40/140 mg/m2, 50/175 mg/m2, 60/210 mg/m2, 60/250 mg/m2, 60/275 mg/m2, 60/300 mg/m2, and 70/250 mg/m2. Two hundred cycles were administered. Two MTDs were determined, 70/250 mg/m2 and 60/300 mg/m2; the DLTs were febrile neutropenia and diarrhea. Neutropenia was the main hematologic toxicity, with 85% of patients experiencing grade 4 neutropenia. Grade 3/4 nonhematologic toxicities in patients included late diarrhea (7.5%), asthenia (15.0%), febrile neutropenia (22.5%), infection (7.5%), and nausea (5.0%). Pharmacokinetics of both docetaxel and irinotecan were not modified with the administration schedule of this study. CONCLUSION: The recommended dose of docetaxel in combination with irinotecan is 60/275 mg/m2, respectively. At this dose level, the safety profile is manageable. The activity of this combination should be evaluated in phase II studies in different tumor types.

Phase I study of temozolomide in children and adolescents with recurrent solid tumors: a report from the Children's Cancer Group.

1998 ◽  
Vol 16 (9) ◽  
pp. 3037-3043 ◽  
Author(s):  
H S Nicholson ◽  
M Krailo ◽  
M M Ames ◽  
N L Seibel ◽  
J M Reid ◽  
...  
Keyword(s):  
Phase I ◽  
Children And Adolescents ◽  
Complete Response ◽  
Maximum Tolerated Dose ◽  
Hematologic Toxicity ◽  
Cancer Group ◽  
Grade 3 ◽  
Dose Levels ◽  
Dose Limiting Toxicity

PURPOSE The Children's Cancer Group conducted a phase I trial of temozolomide stratified by prior craniospinal irradiation (CSI). PATIENTS AND METHODS Children and adolescents with recurrent or progressive cancer were enrolled. Temozolomide was administered orally daily for 5 days, with subsequent courses administered every 21 to 28 days after full hematologic recovery. Dose levels tested included 100, 150, 180, 215, 245, and 260 mg/m2 daily. RESULTS Twenty-seven patients on the non-CSI stratum were assessable for hematologic toxicity. During the first three dose levels (100, 150, and 180 mg/m2 daily), only grades 1 and 2 hematologic toxicity occurred. One patient at 215 mg/m2 daily had grade 3 hematologic toxicity. Three of eight patients (38%) treated at 245 to 260 mg/m2 daily had dose-limiting toxicity (DLT), which included both neutropenia and thrombocytopenia. Twenty-two patients on the CSI stratum were assessable for hematologic toxicity. Hematologic DLT occurred in one of six patients (17%) at 100 mg/m2 daily and in two of four patients (50%) at 215 mg/m2 daily. No nonhematologic DLT occurred; nausea and vomiting occurred in more than half of the patients. After two courses of temozolomide, 10 patients had stable disease (SD), and three patients had a partial response (PR), one of whom subsequently had a complete response (CR) that persists through 24 months of follow-up. CONCLUSION The maximum-tolerated dose (MTD) of temozolomide for children and adolescents without prior CSI is 215 mg/m2 daily and for those with prior CSI is 180 mg/m2 daily for 5 days, with subsequent courses that begin on day 28. Temozolomide is well tolerated and should undergo phase II testing in children and adolescents.

Phase I and pharmacokinetic trial of weekly CPT-11.

1993 ◽  
Vol 11 (11) ◽  
pp. 2194-2204 ◽  
Author(s):  
M L Rothenberg ◽  
J G Kuhn ◽  
H A Burris ◽  
J Nelson ◽  
J R Eckardt ◽  
...  
Keyword(s):  
Phase I ◽  
Peak Plasma ◽  
Peak Plasma Concentration ◽  
Rest Period ◽  
Maximum Tolerated Dose ◽  
Drug Dose ◽  
Hematologic Toxicity ◽  
Drug Infusion ◽  
Antitumor Effects ◽  
Dose Levels

PURPOSE We conducted a phase I and pharmacokinetic trial of CPT-11 (irinotecan) to characterize the maximum-tolerated dose (MTD), toxicities, pharmacokinetic profile, and antitumor effects in patients with refractory solid malignancies. PATIENTS AND METHODS We treated 32 patients with CPT-11 administered as a 90-minute intravenous infusion every week for 4 consecutive weeks followed by a 2-week rest period. Dose levels ranged from 50 to 180 mg/m2/wk. We determined concentrations of the lactone (active) and total (lactone plus carboxylate) forms of CPT-11 and its metabolite, SN-38, in the plasma and urine of selected patients during and after drug infusion. RESULTS Grade 4 diarrhea was the dose-limiting toxicity (DLT) at the 180-mg/m2/wk dose level. Other toxicities attributed to CPT-11 included dehydration, nausea, vomiting, and asthenia. Hematologic toxicity was mild in most patients. The terminal plasma half-life for CPT-11 (total) was 7.9 +/- 2.8 hours, for CPT-11 (lactone) 6.3 +/- 2.2 hours, for SN-38 (total) 13.0 +/- 5.8 hours, and for SN-38 (lactone) 11.5 +/- 3.8 hours. We observed significant correlations between drug dose and peak plasma concentration (Cpmax) and between drug dose and area under the concentration curve (AUC) for CPT-11, but not for SN-38. CONCLUSION The MTD for CPT-11 in this patient population was 150 mg/m2/wk when administered on a weekly-times-four schedule repeated every 6 weeks. At dose levels greater than 150 mg/m2/wk, diarrhea is dose-limiting.

Sign in / Sign up

Export Citation Format

Share Document