subslover
6 months ago
Monopar Presents Data Showing Tumor Reduction Benefit of Camsirubicin from Ongoing Phase 1b at the 2023 Connective Tissue Oncology Society (CTOS) Annual Meeting
WILMETTE, Ill., Nov. 01, 2023 (GLOBE NEWSWIRE) -- Monopar Therapeutics Inc. (Nasdaq: MNPR), a clinical-stage biopharmaceutical company focused on developing proprietary therapeutics designed to extend life or improve the quality of life for cancer patients, will present data from its ongoing Phase 1b open-label, dose-escalating clinical trial of camsirubicin in patients with advanced soft tissue sarcoma (ASTS) later today at the 2023 Connective Tissue Oncology Society (CTOS) Annual Meeting, which is bringing together the world’s leading sarcoma specialists. Monopar’s poster presentation can be found at the following link: https://www.monopartx.com/pipeline/Camsirubicin/mnpr-201-001-clinical-trial.
Clinical Trial Results To-Date
The Phase 1b clinical trial has enrolled 14 ASTS patients (9 female and 5 male) to-date ranging in age from 26 to 81 years (median = 52.5 years) across five dose cohorts. The trial is currently ongoing and is in the fifth dose level cohort (650 mg/m2).
So far, 9 out of the 14 patients have had stable disease (SD, as defined by RECIST 1.1 criteria) after camsirubicin treatment. All patients in the fourth and fifth cohorts achieved stable disease, including the three most recently treated patients, each of whom also experienced an ~20% tumor size reduction at last study scan. One of these patients had unresectable cancer at study entry, but after the tumor size reduction, the patient became eligible for resection and underwent successful surgical removal of their cancer with clear margins.
No dose-limiting toxicity, as defined in the protocol, has been observed to-date. A medically complex patient in the 650 mg/m2 dose cohort has an ongoing left ventricular ejection fraction (LVEF) decrease that is being monitored. This patient has a BMI of 42.5, one kidney, hypertension, a long standing heart murmur, and a maternal history of heart failure. No toxicities have occurred requiring expansion of a dose cohort, and the maximum tolerated dose (MTD) has not been reached.
Camsirubicin Background
ASTS is a deadly cancer with inadequate treatment options. Doxorubicin is currently the first-line standard of care treatment for most types of ASTS, and the average life expectancy from time of diagnosis for these patients is only about 12 to 15 months. Because of the risk of irreversible heart damage, patients discontinue doxorubicin treatment after just 6 to 8 cycles. Camsirubicin was designed to retain the anti-cancer activity while avoiding the irreversible heart damage that is seen with doxorubicin. The value-driving hypothesis for camsirubicin is straightforward: modifying doxorubicin to reduce cardiac damage could enable both higher and longer dosing, resulting in better efficacy and patient outcomes.
subslover
8 months ago
Monopar Provides Encouraging Camsirubicin Clinical Data Update
WILMETTE, Ill., Aug. 08, 2023 (GLOBE NEWSWIRE) -- Monopar Therapeutics Inc. (Nasdaq: MNPR), a clinical-stage biopharmaceutical company focused on developing innovative treatments for cancer, today provided an update from its currently enrolling multi-center open-label Phase 1b clinical trial of camsirubicin in patients with advanced soft tissue sarcoma (ASTS). Both patients treated to date at the 650 mg/m2 dose level have experienced tumor size reductions – of 18% and 20% respectively – after the first two cycles of camsirubicin treatment. Both patients are set to receive additional cycles of camsirubicin treatment, as well, which may result in further tumor size reduction.
The Phase 1b clinical trial data is continuing to support Monopar’s dose-response hypothesis with camsirubicin. The best response seen prior to the current 650 mg/m2 dose level was at the immediately prior dose level (520 mg/m2), which was a 21% reduction in tumor size in a patient after receiving six cycles of camsirubicin treatment. This patient’s cancer was unresectable at study entry, but after the tumor size reduction, became eligible and the patient underwent successful surgical removal of their cancer with clear margins. Furthermore, all three patients at the 520 mg/m2 dose level achieved stable disease and had either a net reduction or no overall change in tumor size per RECIST 1.1 while on study drug.
Additionally, no drugrelated cardiotoxicity has been observed in the trial to date as evaluated by the industry standard left ventricular ejection fraction (LVEF), and no toxicities have been experienced by any patient that have required expanding the size of a dose cohort. Further, 71% of camsirubicin patients have experienced no hair loss, and only approximately 14% have experienced >50% hair loss, with the remainder having low grade hair loss. This compares favorably to the approximately 50% of doxorubicin treated patients in recent ASTS clinical trials reporting some amount of hair loss, with the majority of these patients experiencing >50% hair loss. Only 14% of camsirubicin patients in the Phase 1b trial have experienced mild-to-severe oral mucositis. This compares favorably to the roughly 35-40% of doxorubicin-treated patients in recent ASTS clinical trials that experienced mild-to-severe oral mucositis.
ASTS is a deadly cancer with inadequate treatment options. Doxorubicin is currently the first-line standard of care treatment for most types of ASTS, and the average life expectancy from time of diagnosis for these patients is only about 12 to 15 months. Because of the risk of irreversible heart damage, patients discontinue doxorubicin treatment after just 6 to 8 cycles. Camsirubicin has been designed to retain the anti-cancer activity while avoiding the irreversible heart damage that is seen with doxorubicin. The value-driving hypothesis for camsirubicin is straightforward: modifying doxorubicin in order to reduce cardiac damage could enable higher and longer dosing, resulting in better efficacy and patient outcomes.
Camsirubicin Clinical Trial Design and GEIS Collaboration
The purpose of this dose escalation Phase 1b trial is to determine the maximum tolerated dose (MTD) of camsirubicin. Once the MTD is reached, Monopar has a clinical collaboration agreement in place with the Spanish Sarcoma Group (Grupo Español de Investigación en Sarcomas, or GEIS) to conduct a multi-country randomized Phase 2 clinical trial. The Phase 2 plan is to evaluate camsirubicin head-to-head against doxorubicin in patients with ASTS, with GEIS as the study sponsor with support from Monopar.
Further information about this actively enrolling, open-label, dose-escalation Phase 1b clinical trial is available at www.ClinicalTrials.gov under study identifier NCT 05043649.
About Monopar Therapeutics Inc.
Monopar Therapeutics is a clinicalstage biopharmaceutical company focused on developing innovative treatments for cancer patients. Monopar's pipeline consists of camsirubicin (Phase 1b) for the treatment of advanced soft tissue sarcoma; MNPR101, a latestage preclinical antibody for radiopharmaceutical use in advanced cancers; and MNPR202, an earlystage camsirubicin analog for various cancers. For more information, visit: www.monopartx.com.
Forward-Looking Statements
Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Examples of these forward-looking statements include statements concerning: that additional cycles of camsirubicin treatment may result in further tumor size reduction; that the hypothesis for camsirubicin is straightforward: modifying doxorubicin in order to reduce cardiac damage could enable higher and longer dosing, resulting in better efficacy and patient outcomes; and Monopar’s plans to conduct a multi-country randomized Phase 2 clinical trial once the MTD is reached evaluating camsirubicin head-to-head against doxorubicin in patients with ASTS, with GEIS as the study sponsor with support from Monopar. The forward-looking statements involve risks and uncertainties including, but not limited to: the camsirubicin Phase 1b trial not proving safety and efficacy at higher doses; not successfully recruiting additional patients and initiating additional clinical trial sites for the camsirubicin Phase 1b clinical trial within expected timeframes, if at all; the Company’s inability to raise sufficient funds or engage a partner to continue the camsirubicin clinical program beyond the Phase 1b clinical trial; GEIS not conducting the camsirubicin Phase 2 clinical trial; and the significant general risks and uncertainties surrounding the research, development, regulatory approval, and commercialization of therapeutics. Actual results may differ materially from those expressed or implied by such forward-looking statements. Risks are described more fully in Monopar's filings with the Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made. Monopar undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made. Any forward-looking statements contained in this press release represent Monopar’s views only as of the date hereof and should not be relied upon as representing its views as of any subsequent date.
CONTACT:??
Monopar Therapeutics Inc.
Investor Relations??
Kim R. Tsuchimoto??
Chief Financial Officer??
kimtsu@monopartx.com
Follow Monopar on social media for updates:?
Twitter: @MonoparTx? LinkedIn: Monopar Therapeutics
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Source: Monopar Therapeutics Inc.
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subslover
11 months ago
Monopar Announces Encouraging Camsirubicin Phase 1b Trial Update
Patient in 520 mg/m2 cohort, previously unresectable, experienced tumor shrinkage and had tumor resected following camsirubicin treatment
3 of 3 patients in the 520 mg/m2 cohort achieved stable disease
WILMETTE, Ill., June 01, 2023 (GLOBE NEWSWIRE) -- Monopar Therapeutics Inc. (Nasdaq: MNPR), a clinical-stage biopharmaceutical company focused on developing innovative treatments for cancer, today announced an update from its currently enrolling multi-center open-label Phase 1b clinical trial of camsirubicin in patients with advanced soft tissue sarcoma (ASTS).
Background on ASTS and Camsirubicin
ASTS is a diverse type of cancer that typically develops in the connective tissue of the body and which has metastasized (spread) or is not amenable to surgery. The average life expectancy from time of diagnosis for patients with ASTS is about 12 to 15 months. Currently, doxorubicin is the first-line standard of care treatment for most types of ASTS.
Doxorubicin is one of the most widely used cancer drugs worldwide with FDA approval in ASTS and 13 additional cancer indications. Unfortunately, although higher doses of doxorubicin are known to be more effective at treating cancer, the risk of irreversible heart damage increases with the cumulative dose and limits the lifetime amount that a patient can receive. As a result, even if patients are responding, they discontinue doxorubicin treatment typically after only 6 to 8 cycles (~6 months or less).
Camsirubicin has been designed to retain the anti-cancer activity while avoiding the irreversible heart damage that is seen with doxorubicin. The hypothesis for camsirubicin is straightforward: modifying doxorubicin in order to reduce cardiac damage could enable higher and longer dosing, resulting in better efficacy and patient outcomes.
Updates from Currently Enrolling Phase 1b Clinical Trial
One patient at the 520 mg/m2 dose level, unresectable at study entry, was deemed eligible for tumor resection after several cycles of camsirubicin treatment and a corresponding 21% reduction in tumor dimensions. This patient recently underwent surgical resection of the cancer.
100% of patients (3 of 3) at the fourth dose-level (520mg/m2) achieved stable disease, and had either a net reduction or no overall change in tumor size per RECIST 1.1 while on study drug.
Phase 1b data continue to show an improvement in median progression free survival from what was observed in the prior camsirubicin Phase 2 trial (265 mg/m2). This is supportive of our dose-response hypothesis with camsirubicin.
Two patients are currently enrolled in the fifth dose-level cohort (650 mg/m2), which is nearly 2.5x the highest dose evaluated in any prior camsirubicin clinical trial (265mg/m2).
No drug-related cardiotoxicity has been observed in this trial to-date as evaluated by the industry standard left ventricular ejection fraction (LVEF).
As previously reported, this trial continues to show less frequent and less severe hair loss and oral mucositis with camsirubicin compared to what has been seen in recent ASTS clinical trials with doxorubicin.
No dose limiting toxicity (DLT) has been experienced by any patient in the trial to-date.
Camsirubicin Clinical Trial Design and GEIS Collaboration
The purpose of this 3+3 dose escalation Phase 1b trial is to determine the maximum tolerated dose (MTD) of camsirubicin. Once the MTD is reached, Monopar has a clinical collaboration agreement in place with the Spanish Sarcoma Group (Grupo Español de Investigación en Sarcomas, or GEIS) to conduct a multi-country randomized Phase 2 clinical trial. The Phase 2 plan is to evaluate camsirubicin head-to-head against doxorubicin in patients with ASTS, with GEIS as the study sponsor with support from Monopar.
Further information about this actively enrolling, open-label, dose-escalation Phase 1b clinical trial is available at www.ClinicalTrials.gov under study identifier NCT 05043649.
About Monopar Therapeutics Inc.
Monopar Therapeutics is a clinical-stage biopharmaceutical company focused on developing innovative treatments for cancer patients. Monopar's pipeline consists of camsirubicin (Phase 1b) for the treatment of advanced soft tissue sarcoma; MNPR-101, a late-stage preclinical antibody for radiopharmaceutical use in advanced cancers; and MNPR-202, an early-stage camsirubicin analog for various cancers. For more information, visit: www.monopartx.com.
Forward-Looking Statements
Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Examples of these forward-looking statements include statements concerning: that modifying doxorubicin to create camsirubicin in order to reduce cardiac damage could enable higher and longer dosing, resulting in better efficacy and patient outcomes; and plans to conduct a multi-country randomized Phase 2 clinical trial once the MTD is reached evaluating camsirubicin head-to-head against doxorubicin in patients with ASTS, with GEIS as the study sponsor with support from Monopar. The forward-looking statements involve risks and uncertainties including, but not limited to: the camsirubicin Phase 1b trial not proving safety and efficacy at higher doses; not successfully recruiting additional patients and initiating additional clinical trial sites for the camsirubicin Phase 1b clinical trial within expected timeframes, if at all; the Company’s inability to raise sufficient funds or engage a partner to continue the camsirubicin clinical program beyond the Phase 1b clinical trial; GEIS not conducting the camsirubicin Phase 2 clinical trial; and the significant general risks and uncertainties surrounding the research, development, regulatory approval, and commercialization of therapeutics. Actual results may differ materially from those expressed or implied by such forward-looking statements. Risks are described more fully in Monopar's filings with the Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made. Monopar undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made. Any forward-looking statements contained in this press release represent Monopar’s views only as of the date hereof and should not be relied upon as representing its views as of any subsequent date.
CONTACT:??
Monopar Therapeutics Inc.
Investor Relations??
Kim R. Tsuchimoto??
Chief Financial Officer??
kimtsu@monopartx.com
Follow Monopar on social media for updates:?
Twitter: @MonoparTx? LinkedIn: Monopar Therapeutics
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