Clinical Trials Logo

Clinical Trial Summary

Gastroentero-pancreatic neuroendocrine tumors (GEP-NETs) are a heterogenous group of neoplasms that arise from enterochromaffin cells of the gastrointestinal (GI) tract and pancreas. They account for 50-70% of all incident NETs. Due to the lack of symptoms in the early stage of disease and the frequency of nonspecific GI symptoms, GEP-NETs are difficult to diagnose. Identification of effective biomarkers (such as Chromogranin A) to improve GEP-NET diagnosis, as well as to assess treatment efficacy, relapse and prognosis, is important for improving outcomes for patients with GEP-NETs. The purpose of this study is to validate the performance of Brahms (BRAHMS) Chromogranin A II Kryptor (KRYPTOR) assay to monitor the course of disease in patients with well-defined GEP-NETs.


Clinical Trial Description

A general characteristic for neuroendocrine tumors (NET) is expression of chromogranin A (CgA), which is released from neuroendocrine cells, occasionally together with cell specific hormones such as gastrin, insulin, somatostatin, and serotonin in functional tumors. Human CgA is an acidic 439 amino acid protein with a sequence containing several mono- and dibasic cleavage sites, and correspondingly, numerous fragments of CgA have been identified in tissue and plasma. CgA is critical to the formation of secretory granules that characterize NETs, and is therefore a useful marker for NETs. Plasma concentrations of CgA and/or CgA fragments are elevated in most NETs. Moreover, since plasma CgA concentrations seem to be closely related to tumor burden in humans, plasma CgA concentration is an important prognostic factor. As such, high plasma concentrations of CgA as well as a dramatic increase in plasma CgA within a short time period, is associated with a poorer prognosis. Plasma CgA has also been suggested to be useful in the follow-up of patients with NETs. Taken together, these observations support the notion that CgA is a promising biomarker candidate for monitoring treatment effectiveness and disease progression or regression. Participation in this clinical study requires no additional visits to the oncologist, radiology or the laboratory. All information needed for the study will be obtained during typical visits as recommended by the oncologist. Clinical assessment of patients with GEP-NETs (according to NCCN guidelines) is based on physical exam, imaging (CT or MRI scans) and laboratory parameters. The course of disease is followed by RECIST 1.1 categorization including the evaluation of tumor burden by imaging. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03817866
Study type Observational
Source Brahms AG
Contact
Status Completed
Phase
Start date January 29, 2019
Completion date December 14, 2021

See also
  Status Clinical Trial Phase
Recruiting NCT04552093 - Hepatic Arterial Infusion Pump Chemotherapy Combined With Systemic Chemotherapy (PUMP-IT) Phase 2/Phase 3
Completed NCT04192565 - A Prospective Investigation of the ColubrisMX ELS System N/A
Completed NCT05178745 - A Prospective Observational Cohort Study Evaluating Resection Rate in Patients With Metastatic Colorectal Cancer Treated With Aflibercept in Combination With FOLFIRI - Observatoire résection
Recruiting NCT03561350 - Detect Microsatellite Instability Status in Blood Sample of Advanced Colorectal Cancer Patients by Next-Generation Sequencing
Recruiting NCT06128798 - Effect of Preoperative Immunonutrition Versus Standard Oral Nutrition in Patient Undergoing Colorectal Surgery. N/A
Recruiting NCT03602677 - Indocyanine Green Fluorescence Imaging in Prevention of Colorectal Anastomotic Leakage N/A
Completed NCT03631407 - Safety and Efficacy of Vicriviroc (MK-7690) in Combination With Pembrolizumab (MK-3475) in Participants With Advanced/Metastatic Microsatellite Stable (MSS) Colorectal Cancer (CRC) (MK-7690-046) Phase 2
Withdrawn NCT04192929 - Chromoendoscopy or Narrow Band Imaging (NBI) for Improving Adenoma Detection in Colonoscopy N/A
Recruiting NCT03042091 - Neomycin and Metronidazole Hydrochloride With or Without Polyethylene Glycol in Reducing Infection in Patients Undergoing Elective Colorectal Surgery Early Phase 1
Terminated NCT02842580 - De-escalation Chemotherapies Versus Escalation in Non Pre-treated Unresectable Patients With Metastatic Colorectal Cancer Phase 2
Completed NCT02889679 - Underwater Resection of Non-pedunculated Colorectal Lesions N/A
Completed NCT02564835 - Effects of Yoga on Cognitive and Immune Function in Colorectal Cancer N/A
Completed NCT02149108 - Nintedanib (BIBF 1120) vs Placebo in Refractory Metastatic Colorectal Cancer (LUME-Colon 1) Phase 3
Completed NCT02503696 - Sample Collection Study to Evaluate DNA Markers in Subjects With Inflammatory Bowel Disease (IBD) N/A
Completed NCT02599103 - The Effects of Various Cooking Oils on Health Related Biomarkers in Healthy Subjects N/A
Completed NCT01719926 - Phase I Platinum Based Chemotherapy Plus Indomethacin Phase 1
Completed NCT01669109 - Hatha Yoga for Patients With Colorectal Cancer N/A
Recruiting NCT01428752 - Study of Prevalence of Colorectal Adenoma in 30- to 49-year-old Subjects With a Family History of Colorectal Cancer N/A
Completed NCT01978717 - General Anesthesia Combined With Epidural Anesthesia Mitigates the Surgical Stress-related Immunosuppression in Patients With Colorectal Cancer N/A
Completed NCT01877018 - Colorectal Cancer Screening in Primary Care N/A