SCRT in TNT With or Without Chlorophyllin

Phase 2Active Not RecruitingNCT05856305

Tata Memorial Centre76 enrolled

Overview

The goal of this clinical trial is to see, if addition of chlorophyllin to neoadjuvant Chemo-radiotherapy can reduce the gastro-intestinal/genitourinary/hematological toxicity rates and improve the quality of life in patient's diagnosed with locally advanced rectal cancer. This is a randomized placebo control trial, wherein participants randomized to Chlorophyllin arm will receive the drug of interest along with the standard treatment. Participants randomized to other arm will receive placebo along with the standard treatment. Researchers will compare the difference between the outcomes from both the arms and will also observe the non-operative management success rates.

The current standard treatment for locally advanced rectal cancer includes neoadjuvant (treatment given before Surgery) radiotherapy \& chemotherapy followed by surgery if needed or wait and watch in patients whom tumour has completely regressed. It has been observed that even after receiving this intensive treatment patients, almost 70% of patients develop acute toxicity (during or within 3 months) of grade 2 or higher (needing medication for toxicity). This affects their treatment tolerance, completion and quality of life. In this study Researchers are going to see if addition of drug Chlorophyllin (derived from green plant leaves) along with standard treatment would help in reducing the acute toxicity. Chlorophyllin is present in all green leaves of plants giving them green color. The drug is derived from green plant leaves. As it is a plant-based product it is safe for humans and has no known side effects of its own. This is a randomized study which has two arms; Arm 1 is test arm where participants will receive drug of interest (Chlorophyllin) and in other arm participants will receive Placebo. Upon successful completion of study, outcomes from both the study arm will be compared and participants will be followed by standard protocol for 3 years.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

QUADRUPLE

Eligibility

Sex: ALLMin age: 18 YearsMax age: 90 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Age \> 18 years. * Histologically confirmed diagnosis of adenocarcinoma of the rectum. * Clinical Stage II/III (T2-3, 4b: adherent to prostate, SV or post vagina but not grossly invading, N0-2) based on MRI. * Non-circumferential tumours with craniocaudal length \<7 cm * The tumours of the lower rectum, or starting up to 7 cm from the anal verge. * No evidence of distant metastases on CT Chest and Abdomen. * No prior pelvic radiation therapy * No prior chemotherapy or surgery for rectal cancer * Eastern Cooperative Oncology Group (ECOG) Performance status 0-2 * Patients must read, agree to, and sign a statement of Informed Consent prior to participation in this study. * Eligible to receive one of the options of standard neoadjuvant chemotherapy as determined by the medical oncologist team. * Absolute neutrophil count (ANC) \> 1.5 cells/mm3, hemoglobin (HGB) \> 8.0 gm/dl, platelet (PLT) \> 150,000/mm3. * Total bilirubin ≤ 1.5 x ULN (except in patients with Gilbert's Syndrome who must have total bilirubin ≤ 3.0 x ULN), aspartate aminotransferase (AST) ≤ 3 x ULN, alanine transaminase (ALT) ≤ 3 x ULN. Exclusion Criteria: * Signet or mucinous histology cancer of rectum * Recurrent rectal cancer or previous pelvic radiotherapy * Primary unresectable rectal cancer. * Creatinine level greater than 1.5 times the upper limit of normal. * Patients who are unable to undergo an MRI. * Patients with a history of any arterial thrombotic event within the past 6 months. This includes angina (stable or unstable), MI, TIA, or CVA. * Ulcerative colitis or any other histologically confirmed inflammatory bowel disease. * Patients with a history of venous thrombotic episodes such as deep venous thrombosis, and pulmonary embolism occurring more than 6 months prior to enrollment may be considered for protocol participation, provided they are on stable doses of anticoagulant therapy. Similarly, patients who are anticoagulated for a trial fibrillation or other conditions may participate, provided they are on stable doses of anticoagulant therapy. * Patients with any other concurrent medical or psychiatric condition or disease which, in the investigator's judgment, would make them inappropriate candidates for entry into this study. * Poor reliability for follow up. * Ineligible as per eligibility criteria

Outcomes

Primary Outcomes

Acute Toxicity

Incidence of grade 2 or higher Common Terminology Criteria for Adverse Events (CTCAE) acute gastro-intestinal (GI)/genitourinary (GI)/haematological toxicity (HT) in advanced rectal cancer. Minimum value: Grade 1 Maximum value: Grade 5 Grade 1 late toxicity means a good outcome. Grade 2 or higher late toxicity means a worse outcome.

Time frame: 3 months post-last cytotoxic therapy.

Secondary Outcomes

Overall successful complete response rates

To estimate the 3-year overall complete response rates (clinical or pathological) and complete clinical response (cCR) at 24-36 weeks post TNT in whole cohort and if any difference between chlorophyllin and control arms.

Time frame: 3 years

Organ preservation rates

To estimate the 3-year organ preservation rates, TME free survival and if any difference between chlorophyllin \& control arms.(by estimating patients who did not need surgery for rectal cancer (Total mesorectal excision; TME) at two years and if any difference between chlorophyllin and control arms.)

Time frame: 3 years

Disease free survival

To estimate the 3-year disease free survival, Distant metastasis free survival, loco-regional failure free survival, and overall survival rates in the whole cohort, and if any difference between two arms and between patients with successful non-operative management versus others.

Time frame: 3 years

Treatment related early and late toxicities

To compare treatment-related early and late toxicities (grade 2 Common Terminology Criteria for Adverse Events, version 5.0) for two years between the groups as (3). Minimum value: Grade 1 Maximum value: Grade 5 Grade 1 late toxicity means a good outcome. Grade 2 or higher late toxicity means a worse outcome.

Time frame: 2 years

Estimation of surgical complications

To estimate surgical complications based on Clavien-Dindo classification. Minimum value: Grade 1 Maximum value: Grade 5 Grade 1 surgical complications means a good outcome. Grade 2 or higher surgical complications means a worse outcome.

Time frame: 30 days post surgery

Health related quality of life

To estimate and compare Health Related Quality of Life (QOL) between various groups as (3). (using quality of life questionnaires (QLQ) of European Organization for Research and Treatment of Cancer (EORTC)) These questionnaires will be filled by patient at six month interval of follow up.

Time frame: 2 years

Cost benefit with reduction in toxicity

The direct cost of per patient for various supportive medications, hospital admissions will be estimated in both arms and compared to see if any financial benefit of reduction in toxicity. Record of medicines and details of hospitalization will be maintained.

Time frame: 2 years

Tumor Volume reduction kinetics

To study the correlation of tumour volume with used radiotherapy doses leading to a successful non-operative management versus not in the study group of patients.

Time frame: 2 years

To evaluate the timeline of Occurence

To evaluate the timeline of Occurence of grade 2/3 GI toxicities (namely rectal bleeding, rectal ulcer, rectal pain, tenesmus) during SCRT based TNT.

Time frame: 3 years

SCRT in TNT With or Without Chlorophyllin

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes