Dose Escalation and Dose Expansion Study of GAS in Subjects With Metastatic Pancreatic Adenocarcinoma

Metastatic Pancreatic Adenocarcinoma Clinical Trial

— GAS  

Official title:

A Phase 1b, Open-label, Multicenter, Dose Escalation and Dose Expansion Study of S-1 in Combination With Nab-paclitaxel and Gemcitabine (GAS) in Subjects With Metastatic Pancreatic Adenocarcinoma

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06229496
• Other study ID #: 202300649A3
• Status: Recruiting
• Phase: Phase 1
• Start date: August 1, 2023
• Est. completion date: July 31, 2026

Study information

• Verified date: January 2024
• Source: Chang Gung Memorial Hospital
• Contact: Wen-Kuan Huang, MD, PhD
• Phone: 03-3281200
• Email: medfox0924[@]cgmh.org.tw
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A Phase 1b, open-label, multicenter, dose escalation and dose expansion study of S-1 in combination with nab-paclitaxel and gemcitabine (GAS) in subjects with metastatic pancreatic adenocarcinoma. This study is a dose escalation and dose expansion study with the objective to establish the MTD and/or RP2D and/or DLT of nab-paclitaxel and gemcitabine in combination with a body surface area(BSA)-based dose of S-1 in subject with metastatic pancreatic adenocarcinoma.

Description:

Pancreatic ductal adenocarcinoma (PDAC) is the seventh leading cause of cancer- related death worldwide as the second leading cause of cancer mortality in the United States by 2030 . The overall 5-year survival rate is around 5% for advanced PDAC and 15-30% for resected PDAC. While recent advances have emerged in precision medicine and immunotherapy in a variety of cancer types, unfortunately these drugs are not applicable to most patients with PDAC. To date, polychemotherapy combinations remain the mainstay of systemic treatments for advanced PDAC. Of note, FOLFIRINOX is a triplet combination regimen while nab-Paclitaxel and gemcitabine is a doublet combination. Both NALIRIFOX and FOLFIRINOX showed the same median OS with about 11.1 months from NAPOLI 3 and PRODIGE4 trials, respectively, demonstrating the biologically comparable anti-tumor effects. On the other hand, the median OS of 8.5 months of gemcitabine plus nab-paclitaxel raised the question-would it be possible to add the third active drug in this doublet combination to achieve more potential efficacy, being comparable with triplet combination such as FOLFIRINOX or NALIRIFOX. Therefore, in this study the investigator aimed to investigate whether adding S-1 to nab-paclitaxel and gemcitabine as GAS regimen can be a potential triplet combination.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 70
• Est. completion date: July 31, 2026
• Est. primary completion date: July 31, 2026
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Histologically or cytologically confirmed pancreatic adenocarcinoma (poorly differentiated carcinoma is allowed in the absence of neuroendocrine features or squamous differentiation)

2. Treatment-naï ve stage IV disease (measurable disease is required). Prior adjuvant chemotherapy or radiochemotherapy is allowed, if completed = 6 months before enrollment.

3. Measurable disease defined as at least one lesion that can be measured in at least one dimension (longest diameter to be recorded) as = 10 mm with CT scan or MRI

4. Eastern Cooperative Oncology Group (ECOG) performance score of 0-1

5. Life expectancy > 6 months in the opinion of his/her treating physician.

6. At least 18 years of age

7. Ability to understand the nature of this study protocol, comply with study and/or follow-up procedures, and sign the IRB-approved written informed consent

8. Fertile female and male patients with child-bearing potential agree to use adequate contraceptive measures prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while participating in this study, she must inform her treating physician immediately.

9. Adequate bone marrow function:

Absolute neutrophil count (ANC) = 1500/uL Platelet count = 100,000/uL Hemoglobin = 9.0 g/dL

10. Adequate hepatic function:

Total bilirubin = 1.5 X ULN (=3.5 mg/dL if with adequate biliary tract drainage/stent placement) AST = 3.0 X ULN (=5.0X ULN if liver metastases are present) ALT = 3.0 X ULN (=5.0X ULN if liver metastases are present)

11. Adequate renal function (defined as serum creatinine = 1.5 X ULN or creatinine clearance rate (CCr) = 50 mL/min (calculated by Cockroft-Gault formula; male: [(140 - age in years) × weight in kg)]/[72 × serum creatinine(mg/dL)];female=male x 0.85 )

12. Able to take the oral study medication (S-1)

13. No clinically significant abnormal ECG findings within 28 days (4 weeks) prior to enrollment

Exclusion Criteria:

1. Have known endocrine pancreatic tumors or ampullary cancer

2. Have received first line treatment for metastatic pancreatic cancer

3. Have a serious concomitant active infection or other major comorbidities that, in the opinion of the investigator, would compromise the patient's ability to adhere to the protocol (e.g., stroke, uncontrolled arrhythmia, heart failure, or active autoimmune disease)

4. Have HIV history or hepatitis B and C infection, except for prescribing anti-hepatitis B medications for hepatitis B carrier and undetectable HCV RNA level for hepatitis C prior to enrollment.

5. Have known central nervous system (CNS) malignancy or metastasis (screening is not required)

6. Have concurrent hematologic malignancies, acute or chronic leukemia

7. Have known additional malignancy that is progressing or required active treatments within the past 6 months, except for basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or carcinoma in situ (e.g., breast or cervical cancer)

8. Women with a positive pregnancy test or who are breastfeeding

9. Have participated within the last 30 days in a clinical trial involving an investigational product

10. Unable to swallow capsules or has diseases significantly affecting gastrointestinal function or resection of the stomach or small bowel, malabsorption syndrome, symptomatic inflammatory bowel disease or ulcerative colitis, or partial or complete bowel obstruction.

11. Current peripheral sensory neuropathy = Grade 2

12. Any social condition or diseases judged ineligible by physician for participation in the study due to safety concern

Related Conditions & MeSH terms

• Adenocarcinoma
• Metastatic Pancreatic Adenocarcinoma

Intervention

Combination Product:
• Gemcitabine 800mg/m2 + Nab-paclitaxel 100mg/m2 + S-1 (dose according to BSA)
Dose escalation study-dose level 1
• Gemcitabine 800mg/m2 + Nab-paclitaxel 125mg/m2 + S-1 (dose according to BSA)
Dose escalation study-dose level 2
• Gemcitabine 1000mg/m2 + Nab-paclitaxel 125mg/m2 + S-1 (dose according to BSA)
Dose escalation study-dose level 3

Locations

Country	Name	City	State
Taiwan	Chang-Gung Memorial Hospital, Kaohsiung Branch	Kaohsiung
Taiwan	Chang-Gung Memorial Hospital, Linkou Branch	Taoyuan

Sponsors (1)

Lead Sponsor	Collaborator
Chang Gung Memorial Hospital

Country where clinical trial is conducted

Taiwan, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Maximum tolerated dose (MTD)	To determine a recommended Phase 2 dose (RP2D) of nab-paclitaxel and gemcitabine in combination with body surface area (BSA) - based dose of S-1 in subject with metastatic pancreatic adenocarcinoma	From cycle 1 day 1 (each cycle is 14 days) untill the date of radiographic tumor assessment confirm tumor recurrence or specified AE occur, assessed up to 3 years
Primary	Dose-limiting toxicity (DLT)		From cycle 1 day 1 (each cycle is 14 days) untill the date of radiographic tumor assessment confirm tumor recurrence or specified AE occur, assessed up to 3 years
Primary	Objective response rate (ORR)	Tumor response will be evaluated according to the Response Evaluation Criteria Solid Tumors (RECIST) criteria version 1.1.	From cycle 1 day 1 (each cycle is 14 days) untill the date of radiographic tumor assessment confirm tumor recurrence or specified AE occur, assessed up to 3 years
Secondary	Safety profile of GAS regimen	Safety profile will be recorded and graded according to NCI-CTCAE v 5.0.	From cycle 1 day 1 (each cycle is 14 days) untill the date of radiographic tumor assessment confirm tumor recurrence or specified AE occur, assessed up to 3 years
Secondary	Disease Control Rate (DCR)	Defined as having complete response, partial response or stable disease at 12 weeks. (based on RECIST Version 1.1)	Through study completion, an average of 3 year
Secondary	Duration of Response (DoR)	Time from documentation of tumor response to disease progression. (based on RECIST Version 1.1)	Through study completion, an average of 3 year
Secondary	Progression-free Survival (PFS)	From the start date of study treatment to the date of progression disease or death. (based on RECIST Version 1.1)	Through study completion, an average of 3 year
Secondary	Overall Survival (OS)	From the start date of study treatment to the date of death.	Through study completion, an average of 3 year