Clinical development of namitecan (ST1968), a novel camptothecin derivative with high antitumor activity: Phase I clinical data

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 2570-2570 ◽  
Author(s):  
D. Hess ◽  
S. Boehm ◽  
A. Delmonte ◽  
E. Gallerani ◽  
P. Barbieri ◽  
...  

2570 Background: Namitecan is a new water-soluble camptothecin analogue which showed high antitumor activity in preclinical models. Aim of this trial was to determine safety, PK profile and activity in adult patients with advanced solid tumors. Methods: The dose escalation started at 2.5 mg i.v. on days 1 and 8 of a 21 day cycle (D1, D8 Q21D) and increased according to 3+3 cohort design depending on the observed toxicity. Dose limiting toxicity (DLT) definitions were: ANC <0.5x109/L for >5 days; PLT ≥ Grade 3 (CTC V3); grade ≥2 liver/renal toxicity not recovered by D22; any non-hematologic toxicity ≥ Grade 3; D8 dose skipping due to toxicity. Maximum tolerated dose (MTD) and recommended dose (RD) were the primary end-points. Blood and urine samples were collected at cycle 1 for PK evaluation. Results: 31 pts (11 endometrial ca., 5 CRC, 5 ovarian ca., 2 NSCLC, 8 other) have been included, with 6 dose levels evaluated (2.5; 5; 10; 15; 17.5 and 20 mg). 17.5 mg was introduced later when 2/7 DLTs at 20 mg were observed (ANC G4>5days, one with D8 skipping). At 17.5mg 2/4 pts experienced DLTs (ANC G4; D8 skipped). Uncomplicated neutropenia and thrombocytopenia were the most relevant G3/4 hematological toxicities. Other toxicities were mild or moderate asthenia, fatigue and alopecia. The MTD was defined at 17.5 mg and the RD was 15 mg. Stable disease ≥ 6 cycles was recorded in 6 pts (2 stable diseases ≥ 10 cycles). PK was linear and data suggest an entero-hepatic recirculation. No metabolites were found in plasma and the product resulted poorly excreted into urine. Conclusions: The MTD and RD of D1, D8 Q21D schedule have been identified. The study will continue with the evaluation of MTD and RD of a single administration per cycle (D1 Q21D), to optimize the schedule of treatment. [Table: see text]

1998 ◽  
Vol 16 (9) ◽  
pp. 3037-3043 ◽  
Author(s):  
H S Nicholson ◽  
M Krailo ◽  
M M Ames ◽  
N L Seibel ◽  
J M Reid ◽  
...  

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.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 2573-2573 ◽  
Author(s):  
J. C. Bendell ◽  
G. J. Weiss ◽  
J. R. Infante ◽  
E. G. Chiorean ◽  
M. Borad ◽  
...  

2573 Background: TH-302 is a 2-nitroimidazole prodrug of the DNA alkylator, bromo-isophosphoramide mustard (Br-IPM). TH-302 is essentially inactive under normoxia but in severe hypoxia and in the presence of certain reductases, it is reduced and Br-IPM is released. Methods: Eligible patients (pts) had ECOG ≤1, advanced or metastatic solid tumors, evaluable by RECIST, and acceptable hematologic, liver and renal function. A modified accelerated titration design was used. TH-302 was administered intravenously over 30–60 minutes on Day 1, 8 and 15 of a 28-day cycle. CT scans were obtained after every 2 cycles. Detailed pharmacokinetic sampling was performed on Days 1 and 15. The primary objectives of this study were to determine the dose limiting toxicity (DLT) and the maximum tolerated dose (MTD). Results: Twenty-nine pts enrolled at 3 sites at 9 dose levels from 7.5–670 mg/m2. Median age: 64y. 20 male/9 female. ECOG 0/1: 16/13. Primary tumor: prostate (8), colorectal (8), lung (5) other (8). Two of 5 pts at 670 mg/m2 had DLT: Herpes simplex perianal/rectal ulcers and dehydration due to mucositis. Reversible skin and mucosal adverse events (AE) occurred in 12 of 15 (80%) pts at ≥480 mg/m2 including grade 3 events in 3 pts. The most common TH-302-related AEs were nausea, skin lesions, vomiting and fatigue. Hematologic toxicity was mild and limited: two pts with grade 1 and one pt with grade 2 neutropenia and five pts with grade 1 thrombocytopenia. Five pts had grade 3 and one grade 4 lymphopenia. Four pts have enrolled at an intermediate dose of 575 mg/m2 with no DLT so this is likely the MTD and is well above the predicted biologic effective dose of 100 mg/m2. One pt with SCLC treated at 480 mg/m2 and one with melanoma treated at 670 mg/m2 had unconfirmed partial responses; 12 pts had stable disease (6 continuing after 4 or more cycles), 7 had PD, 4 were unevaluable and 4 are too early to assess. Cmax and AUC for TH-302 and Br-IPM increased linearly with no accumulation at Day 15. Conclusions: Weekly TH-302 has remarkably little hematologic toxicity. Skin and mucosal AEs have developed at the higher dose levels. Skin/mucosa are known to have hypoxic regions. TH-302 is the first HAP to demonstrate tumor responses in Phase I. The MTD is likely 575 mg/m2. Studies in combination with chemotherapy are ongoing. [Table: see text]


2000 ◽  
Vol 18 (5) ◽  
pp. 1116-1116 ◽  
Author(s):  
Alex A. Adjei ◽  
Cheri E. Klein ◽  
Helen Kastrissios ◽  
Richard M. Goldberg ◽  
Steven R. Alberts ◽  
...  

PURPOSE: The goals of this study were to determine the maximum-tolerated dose and describe the toxicities of the combination of irinotecan and docetaxel administered every 3 weeks to patients with advanced malignancies and, also, to evaluate the effect of irinotecan on the disposition of docetaxel and describe preliminary evidence of antitumor activity. PATIENTS AND METHODS: Eighteen patients received 85 courses (median, two courses; range, one to 15 courses) of treatment with irinotecan, administered over 90 minutes by intravenous infusion, followed by docetaxel, administered over 60 minutes by intravenous infusion. Four escalating dose levels of irinotecan/docetaxel (160/50 mg/m2, 160/65 mg/m2, 200/65 mg/m2, and 200/75 mg/m2) were studied. Pharmacokinetic analyses were performed to evaluate the effect of irinotecan on the disposition of docetaxel. RESULTS: The most common and dose-limiting toxicity was myelosuppression, which consisted of neutropenia that was severe (National Cancer Institute common toxicity criteria [NCI CTC] grade 4) but brief (< 5 days) in 11 patients, with three episodes of febrile neutropenia. Nonhematologic toxicities of anorexia, nausea, and stomatitis were mild to moderate (NCI CTC grades 1 and 2), but there was one incidence each of both CTC grade 3 anorexia and nausea. All patients had total alopecia. Diarrhea was dose-dependent and severe in four patients who failed to take adequate antidiarrhea therapy. Five out of 16 assessable patients, one with cholangiocarcinoma, one with leiomyosarcoma, and three with non–small-cell lung cancer, achieved partial remissions. CONCLUSION: The combination of irinotecan and docetaxel causes significant reversible myelosuppression, which was dose limiting but led to no serious sequelae. There was no evidence of a clinically significant interaction using these two agents in this sequence. The combination showed antitumor activity at all the dose levels tested and should be further studied in a number of tumor types. The recommended phase II dose on this schedule is irinotecan 160 mg/m2 and docetaxel 65 mg/m2.


Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 3661-3661 ◽  
Author(s):  
David J. Inwards ◽  
Paul Fishkin ◽  
Betsy R. LaPlant ◽  
Matthew T. Drake ◽  
Paul Kurtin ◽  
...  

Abstract Abstract 3661 Objective: We conducted this trial to determine the maximum tolerated dose (MTD) and schedule of temsirolimus added to an established regimen comprised of rituximab and cladribine for the initial treatment of mantle cell lymphoma and to generate preliminary information on the toxicity and efficacy of this combination. Methods: A standard phase I cohort of 3 study design was utilized. MTD was defined as the dose level below the lowest dose that induces dose-limiting toxicity (DLT) in at least one-third of patients (at least 2 of a maximum of 6 new patients). DLT was defined as grade 4 ANC (<500) for ≥5 days, grade 4 ANC (<500) associated with fever (>100.5 F) and/or active infection, PLT <25,000, grade 4 infection, or ≥grade 3 non-hematologic toxicity during the first cycle of therapy as per NCI Common Terminology Criteria for Adverse Events v3.0. The fixed doses of rituximab and cladribine were 375 mg/m2 IV day 1 and 5 mg/m2/d IV days 1–5 of a 28 day cycle, respectively, as previously published. There were 5 planned temsirolimus IV dose levels: 15 mg day 1; 25 mg day 1; 25 mg days 1 and 15; 25 mg days 1,8 and 15; and 25 mg days 1,8,15, and 22. The fifth dose level is as previously published in combination with rituximab. Results: A total of 17 patients were treated: 3 each at dose levels 1–4 and 5 at dose level 5 (25 mg temsirolimus days 1,8,15, and 22). The median age was 75 years (52–86). There were 11 males and 6 females. At presentation 88% had stage IV disease, and 94% had extranodal disease. MIPI scores were low in 6% (1 patient), intermediate in 59% (10 patients), and high in 35% (6 patients). There was a single DLT recorded at dose level 3 based on the initial DLT criteria, though this cytokine release syndrome was clearly rituximab related, and occurred prior to the first dose of temsirolimus. Five patients were treated at the highest planned temsirolimus dose level (25 mg days 1,8,15, and 22) with no DLT observed. No further dose escalation was planned, and this level was determined to be tolerated, though higher levels may be tolerable. All patients were evaluable for adverse events. Hematologic toxicity was frequent, with grade 3 anemia in 12% of patients, grade 3 thrombocytopenia in 35%, grade 4 thrombocytopenia in 30%, grade 4 lymphopenia in 47%, grade 3 neutropenia in 24%, and grade 4 neutropenia in 18% of patients. There were 3 thrombotic episodes, 2 of which were attributed to therapy, and 3 episodes of pneumonitis. The overall response rate was 94% with 53% CR and 41% PR. The median progression free survival was 18.7 months. Conclusions: Temsirolimus 25 mg IV weekly may be safely added to rituximab and cladribine at 375 mg/m2 IV day 1 and 5 mg/m2/d IV days 1–5 of a 28 day cycle, respectively. This regimen had promising preliminary activity in an elderly cohort of patients with mantle cell lymphoma. Disclosures: Off Label Use: Temsirolimus for mantle cell lymphoma.


2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 17529-17529
Author(s):  
S. M. Smith ◽  
K. Van Besien ◽  
K. Conner ◽  
T. Gajewski ◽  
T. Kuna ◽  
...  

17529 Background: Aggressive lymphomas are chemosensitive, but frequently relapse. Bcl-2 protein overexpression promotes tumor cell survival via anti-apoptosis, and is clinically correlated with shortened remission duration and decreased survival. The antisense oligonucleotide oblimersen sodium (G3139) downregulates bcl-2, has activity in NHL, and may be synergistic with chemotherapy. Methods: Pts had histologically confirmed aggressive NHL that relapsed after one prior anthracycline-based regimen. G3139 was given as a continuous infusion on Days 1–8 (168 hours) every 14 days, with stem cell collection following cycle 3. Standard RICE chemotherapy was given on Days 4–6, allowing 72 hrs pre- and 48 hrs post-chemo G3139. Dose-limiting toxicity (DLT) was defined as grade 3 or greater non-hematologic toxicity, grade 4 thrombocytopenia, duration of neutropenia <500/mL greater than 7 days despite growth factors, grade 3 hemolytic anemia, or prolonged severe anemia. Pharmacodynamic endpoints included measurement of bcl-2 protein in peripheral blood (FACS analysis) and tumor (IHC), and bcl-2 RT-PCR in blood and tumor. Results: 8 pts were enrolled. At dose level 1 (G3139 3 mg/kg/day), both enrolled pts had grade 4 thrombocytopenia. The next 6 patients were treated with G3139 2.5 mg/kg/day (Dose Level -1) without any DLT’s. There were no grade 3 or 4 non-hematologic toxicities. 7 evaluable pts had successful stem cell collections: median CD34+ 4.2 × 106/kg (range, 1.3–8.72 × 106/kg). Responses: 4 CR/CRu, 2 PR, 1 SD, 1 too early. There was no detectable decrease in bcl-2 protein in the blood using flow cytometry or RT-PCR. Conclusion: The maximum tolerated dose of G3139 given over 8 days in combination with RICE chemotherapy is 2.5 mg/kg/day. It is unlikely that this dose sufficiently suppresses bcl-2 levels. The protocol will thus be amended to shorten the G3139 infusion to 5 days with renewed efforts to escalate the dose. No significant financial relationships to disclose.


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 14137-14137 ◽  
Author(s):  
B. Holkova ◽  
S. Kummar ◽  
P. Glauber ◽  
A. Chen ◽  
J. M. Strong ◽  
...  

14137 Background: CDDO, a synthetic triterpenoid, induces apoptosis through intrinsic and extrinsic pathways, and as a ligand for the transcription factor PPAR-? that controls cellular differentiation and growth inhibition. Methods: CDDO was given as a 5 day continuous infusion every 28 days; starting dose 0.6 mg/m2/hr. Accelerated titration design used, 1 patient (pt)/cohort entered until a single pt has dose-limiting toxicity (DLT) or 2 pts exhibit grade (gr) = 2 toxicity during the first cycle. The study then converts to a standard 3–6 pt/cohort design. Maximum tolerated dose (MTD): Dose at which no more than 1/6 pts have DLT and the dose below which at least 2/6 patients have DLT. Objectives: Determine toxicity profile, pharmacokinetics (PK), and MTD of CDDO. PK were determined by LC-MS/MS analysis of plasma collected pre, during and post CDDO infusion. Results: 6 pts have been accrued thus far up to dose level 6. (19.2 mg/m2). Diagnoses: colon -3, sarcoma-1, bladder -1 and ovary-1. Median age: 52. DLT and MTD have not yet been achieved. Gr 1–2 toxicities have been acceptable: anemia, thrombocytopenia, decreased Na+, Mg++ and albumin, elevated Ca++, transaminases and bilirubin, and anorexia, fatigue and constipation. Gr 4 pulmonary emboli (unrelated to CDDO) was seen in one pt. PK: Steady state CDDO plasma concentrations (Css) in the first 3 dose levels increased linearly (see table ). Post infusion CDDO plasma concentrations decreased in a bi- exponential manner for the first three dose levels. Data indicate that < 1% of CDDO is excreted in the urine unchanged. No oxidative metabolism has been observed; however, we identified a CDDO glucuronide conjugate in urine and in human liver tissue incubations in vitro. Conclusions: The DLT and MTD have not been reached, and accelerated dose escalation continues. Since the CDDO Css appears to increase linearly with dose, we anticipate achieving 1 μM plasma levels at dose level 5 (9.6mg/m2/hr), the effective concentration in preclinical models. [Table: see text] No significant financial relationships to disclose.


2015 ◽  
Vol 33 (18_suppl) ◽  
pp. LBA101-LBA101 ◽  
Author(s):  
Anthony B. El-Khoueiry ◽  
Ignacio Melero ◽  
Todd S. Crocenzi ◽  
Theodore Hobart Welling ◽  
Thomas Cheung Yau ◽  
...  

LBA101 Background: Overexpression of PD-L1 in HCC has a poor prognosis. Safety and preliminary antitumor efficacy of nivolumab, a fully human IgG4 monoclonal antibody PD-1 inhibitor, was evaluated in a multiple ascending-dose, phase I/II study in patients (pts) with HCC. Methods: Pts with histologically confirmed advanced HCC with Child-Pugh (CP) score ≤ B7 and progressive disease (PD) on, intolerant of, or refusing sorafenib were enrolled. Dose escalation occurred in parallel cohorts based on etiology: no active hepatitis virus infection or virus-infected HCC pts. Pts received nivolumab 0.1 – 10 mg/kg intravenously for up to two years. The primary endpoint was safety. Secondary endpoints included antitumor activity using mRECIST criteria, pharmacokinetics, and immunogenicity. Results: The study has enrolled 41 pts with a CP score of 5 (n = 35) or 6 (n = 6), ECOG score of 0 (n = 26) or 1 (n = 15), 73% with extrahepatic metastasis and/or portal vein invasion, and 77% with prior sorafenib use. Eighteen pts remain on study, and 23 discontinued treatment due to PD (n = 17), complete response (CR; n = 2), drug-related adverse events (AEs; n = 2) and non-drug–related AEs (n = 2). Drug-related AEs of any grade occurred in 29 pts (71%; 17% grade 3/4), with ≥ 10% of pts experiencing aspartate aminotransferase (AST) increase and rash (each 17%), alanine aminotransferase(ALT) and lipase increase (each 15%), and amylase increase (12%). Grade 3 and 4 AEs ≥ 5% were AST increase (12%), ALT increase (10%) and lipase increase (5%). A dose-limiting toxicity occurred in an uninfected pt at 10 mg/kg; no maximum tolerated dose was defined in any cohort. Response was evaluable in 39 pts: 2 CR (5%) and 7 partial responses (PR; 18%). Response duration was 14–17+ months for CR, < 1–8+ months for PR, and 1.5–17+ months for stable disease (SD). Overall survival (OS) rate at 6 months is 72%. Conclusions: Nivolumab has a manageable AE profile and produced durable responses across all dose levels and HCC cohorts, with a favorable 6-month OS rate. Updated safety, antitumor activity, and biomarker data will be presented. Clinical trial information: NCT01658878. [Table: see text]


Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 1458-1458 ◽  
Author(s):  
Mikkael A. Sekeres ◽  
Alan List ◽  
David Cuthbertson ◽  
Ronald Paquette ◽  
Thomas Loughran ◽  
...  

Abstract Background: Early MDS becomes more advanced as immature myeloid cells proliferate, angiogenesis increases, genetic lesions accumulate, and tumor suppressor genes become inactivated through hypermethylation. Progression to acute myeloid leukemia (AML) may be prevented by targeting these defects through combination therapy, using an immunomodulatory, anti-angiogenic agent, lenalidomide (LEN), and a hypomethylating drug, azacitidine (AZA). Methods: We conducted a multicenter, Phase I trial in patients (pts) with advanced MDS (IPSS score ≥1.5, or FAB or WHO classification with ≥5% myeloblasts) starting in 6/06, with results reported through 7/07. Pts were enrolled using a “3+3” design (See Table), and could not receive LEN or AZA previously. Cycles lasted 28 days, to a maximum of 7 cycles of therapy. The primary endpoint was to determine the maximum tolerated dose (MTD) and dose-limiting toxicities (DLTs, defined as Grade 3/4 non-hematologic toxicity or &gt;50% neutrophil (ANC) or platelet (plt) drop without recovery by Day 56) of the combination. A secondary endpoint was response as defined by the Modified International Working Group. Dose Level AZA Schedule LEN Schedule 1 75 mg/m2 SC days 1–5 5 mg PO days 1–14 2 75 mg/m2 SC days 1–5 5 mg PO days 1–21 3 75 mg/m2 SC days 1–5 10 mg PO days 1–21 4 50 mg/m2 SC days 1–5, 8–12 5 mg PO days 1–14 5 50 mg/m2 SC days 1–5, 8–12 5 mg PO days 1–21 6 50 mg/m2 SC days 1–5, 8–12 10 mg PO days 1–21 Results: Seven patients have been enrolled, 6 are evaluable for toxicity data. Median age was 64 years (range 52–70), 1 pt was female, and median follow-up is 5.5 months (range 1.5–13). All pts had RAEB-2; IPSS scores were 1.5 (4), 2.0 (2), and 3.0 (1), with IPSS cytogenetic risk categories of poor (1), intermediate (1), and good (5). No pt had a del (5q) lesion. Median time from MDS diagnosis was 3.5 wks (range 2–106). No DLTs occurred in Dose Levels 1 or 2, and MTD has not yet been reached. Grade 1/2 non-hematologic toxicities (n=6) included fatigue (4), injection site reaction (6), rash (3), pruritis (3), constipation or diarrhea (6), dizziness (1), and mucositis (1). Grade 3/4 non-hematologic toxicities included febrile neutropenia (1). Median ANC drop was 16.4% and plt drop was 10.4%. Although one patient was delayed 1 week in starting cycle 2 for neutropenia, there were no dose-reductions for toxicities. Four pts are evaluable for response: 2 had a complete response, 1 an erythroid response, and 1 progressive disease. Conclusions: The combination of LEN and AZA is well-tolerated and early results suggest efficacy in advanced MDS. Responses and toxicity data from higher Dose Levels will be presented.


2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 8075-8075
Author(s):  
Sonali M. Smith ◽  
Kenneth Stuart Cohen ◽  
Justin Paul Kline ◽  
Jose D Zavala ◽  
Kathy Conner ◽  
...  

8075 Background: The PI3K/Akt/mTOR axis is deregulated in lymphomas and is an emerging therapeutic target. We previously reported activity of temsirolimus (TEM) in DLBCL and FL (JCO 2010 28(31); however, the response duration was short. Lenalidomide (LEN) is an immunomodulatory agent with multiple anti-tumoral and microenvironmental effects, with activity across lymphoma subtypes. We are thus conducting a phase I/II study of TEM plus escalating doses of LEN. The phase I portion is completed. Methods: Patients (pts) had rel/ref lymphoma after >1 cytotoxic regimen. Other criteria: ANC > 1000/mL, platelets > 75,000/mL, nl renal and hepatic function, no VTE within 3 months, non-pregnant. A standard “3 + 3” design was used with dose levels (DL) listed (Table). TEM was given IV weekly and LEN was dosed orally on D1-D21, q28 days. Dose-limiting toxicity (DLT) was defined as cycle 1 grade 3 or 4 non-hematologic toxicity not responsive to standard supportive care, grade 4 thrombocytopenia > 7 days (or associated with bleeding or requiring more than 1 platelet transfusion), ANC < 500/mL > 7 days despite growth factors, or any thromboembolic event. Results: 18 pts (13M, 5F), med age 64 y (range, 42-80 y) were enrolled. 3 pts are ineval for DLT evaluation: one withdrew consent before starting treatment, 1 withdrew consent after a single dose, and 1 died of rapid disease progression after 1 dose. There was 1 DLT at DL1 and 2 DLTs at DL3 (Table). Adverse effects that did not meet DLT criteria: hypokalemia, hypertriglyceridemia, vomiting, urinary tract infection, skin infection, nausea, hypoxia, hyponatremia, diarrhea, and hyperglycemia (each occurring in one pt). There are 5 partial responses, 4 stable disease, 3 progressive disease, 2 not adequately assessed, and 4 still on active treatment. Conclusions: The combination of weekly intravenous TEM plus oral LEN is well-tolerated in a heavily pretreated group of pts with rel/ref lymphomas. The recommended phase II doses are TEM 25mg weekly plus LEN 20mg (D1-D21, q28d). [Table: see text]


2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 2550-2550 ◽  
Author(s):  
Serena Marchetti ◽  
Frederik Stuurman ◽  
Stijn Koolen ◽  
Johannes Moes ◽  
Jeroen Hendrikx ◽  
...  

2550 Background: ModraDoc001 is a novel oral formulation containing docetaxel as a solid dispersion. Oral administration of docetaxel is feasible in combination with the CYP3A4 inhibitor ritonavir. Objectives were to determine the safety, maximum tolerated dose (MTD) and pharmacokinetics (PK) of weekly oral docetaxel (as ModraDoc001) in combination with ritonavir. Methods: Patients with advanced solid tumors, WHO PS ≤ 2, no concomitant use of MDR or CYP3A modulating drugs, adequate bone marrow (ANC ≥ 1.5x109 /L), liver (bilirubin ≤ 1.5xULN, ALAT/ASAT ≤ 2.5xULN) and renal function (creatinine ≤ 1.5xULN or clearance ≥ 50 ml/min) were eligible. Docetaxel (ModraDoc001 10mg capsule) and ritonavir (Norvir 100mg) were simultaneously given once weekly in a ‘3+3 cohort’ dose escalation design. MTD was defined as the highest dose resulting in <1/6 probability of causing a dose limiting toxicity in the first 4 weeks of treatment. This cohort was expanded with 6 patients. PK was determined on days 1 and 8. Results: 40 patients (25 male, 35 evaluable for safety) were enrolled in 6 dose levels (30/100, 40/100, 60/100, 80/100, 60/200 and 80/200 mg docetaxel/ritonavir). Common treatment related adverse events in the 4 highest dose levels were diarrhea (68%), nausea (62%) and fatigue (62%), mostly CTC grade 1-2 (80%, 95% and 73% respectively). Five patients experienced a DLT (grade 3 diarrhea (4), elevated ASAT/ALAT (1), grade 4 dehydration and grade 3 mucositis (1), grade 3 fatigue (2)). The MTD was 60 mg/200 mg docetaxel/ritonavir. Partial remission was seen in 4 patients (CUP, NSCLC, gastric and mamma ca) and sustained stable disease in 15 patients (6x NSCLC). Both drugs were rapidly absorbed after oral administration. Mean Tmax was 2.0 hours (CV=73%) for docetaxel. Cmax and AUC of docetaxel increased less than proportionally with dose to 162 ng/ml (CV= 67%) and 1615 ng/ml*hr (CV= 81%), respectively, in 15 patients at the MTD. Conclusions: At the MTD (once weekly 60 mg docetaxel and 200 mg ritonavir) ModraDoc001 is safe, well tolerated and shows encouraging antitumor activity. The exposure of docetaxel with this regimen is comparable to weekly intravenous administration of 35 mg/m2 docetaxel. Phase II studies in solid tumors are planned.


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