Evaluation of Thymidine Kinase Activity in the Serum of Patients With Solid Tumors
Recruitment status was Recruiting
This study aimed to evaluate serum thymidine kinase 1 (TK1) activity as a marker for solid tumors and more specifically in: preoperative testing for prediction of disease recurrence and survival; follow-up after surgical removal of the original tumor for early detection of disease recurrence and in monitoring therapy as a surrogate marker of tumor response.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Evaluation of Serum Thymidine Kinase Activity in Diagnosis,Prognosis and Monitoring of Treatment in Patients With Solid Tumors|
|Study Start Date:||February 2010|
|Estimated Study Completion Date:||December 2011|
|Estimated Primary Completion Date:||December 2010 (Final data collection date for primary outcome measure)|
colon cancer, prostate cancer, lung cancer, ovarian cancer
Thymidine kinase 1 (TK1) is a metabolic enzyme catalyzing the ATP-dependent phosphorylation of thymidine to thymidine monophosphate followed by its utilization in DNA synthesis. It has been demonstrated that activity of TK1 in the serum of cancer patients corresponds to the amount of dividing tumor cells. Several clinical investigations clearly showed that abnormal TK1 levels indicate tumor growth. In breast cancer, serum TK1 was shown to predict increased risk of recurrence following surgery and may be a good marker for monitoring the response to therapy. The measurements of TK1 were useful as a prognostic and monitoring factor in patients with NSCLC. Unfortunately, all previously used assays measuring TK1 activity showed relatively low analytical sensitivity. Recently, the novel high sensitive non-radioactive TK1 assay (DiviTum) has been developed. With this assay tumour growth may be detected at an earlier stage of disease and smaller amounts of residual disease may be detected during and after therapy.
|Contact: Tamar Peretz, MD||6777825 ext 00 972 email@example.com|
|Contact: Hadas Lemberg, PhD||6777572 ext 00 972 firstname.lastname@example.org|
|Hadassah Medical Organization||Recruiting|
|Contact: Arik Tzukert, DMD 6776095 ext 00 972 2 email@example.com|
|Sub-Investigator: Benjamin Nisman, PhD|