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JFMC46-1201

ABSTRACT: Interventions: UFT/LV as postoperative adjuvant chemotherapy for the stage II colorectal cancer is tested as follows: one patient group for 28 days with 7 days rest (everyday medication) and another patient group for 5days with 2days rest (5-days on/2-days, Saturday and Sunday, off). Both medications are conducted for 25weeks as 5 courses (1 course=5weeks, 35days) from the date of the start of the therapy. After the treatment, both patient groups are simply observed without any more therapy, unless any recurrent lesions or any other cancer lesions are observed in them. The surgery alone group is simply observed without therapy, unless any recurrent lesions or any other cancer lesions (synchronous cancers or multiple colorectal cancers) are observed in them. Primary outcome(s): Disease-free survival Study Design: randomized controlled trial, open(masking not used), active control, parallel assignment, treatment purpose

DISEASE(S): Stageii Colorectal Cancer

PROVIDER: 2614017 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:The outcome of treating chronic myeloid leukemia (CML) with imatinib mesylate (IM) is inferior when therapy is commenced in late chronic or accelerated phase as compared to early chronic phase. This may be attributed to additional genomic alterations that accumulate during disease progression. We sought to identify such lesions in patients showing suboptimal response to IM by performing array-CGH analysis on 39 sequential samples from 15 CML patients. Seventy-four cumulative copy number alterations (CNAs) consisting of 35 losses and 39 gains were identified. Alterations flanking the ABL1 and BCR genes on chromosomes 9 and 22, respectively, were the most common identified lesions with 5 patients losing variable portions of 9q34.11 proximal to ABL1. Losses involving 1p36, 5q31, 17q25, Y and gains of 3q21, 8q24, 22q11, Xp11 were among other recurrent lesions identified. Aberrations were also observed in individual patients, involving regions containing known leukemia-associated genes; CDKN2A/2B, IKZF1, RB1, TLX1, AFF4. CML patients in late stages of their disease, harbor pre-existing and evolving sub-microscopic CNAs that may influence disease progression and IM response. Fifteen patients with confirmed CML, on IM for a minimum period of 18-months and showing suboptimal response to IM, as evidenced by failure to achieve major molecular remission (MMolR) at 18 months were identified from a series of patients treated in our centre. Patients received their medication under the auspices of the Glivec International Patient Assistance Program (GIPAP) and were started on an initial dose of 400mg with dose escalations or reductions made according to the patientM-bM-^@M-^Ys response and tolerance. Archived sequential peripheral blood lysates from the patients were retrieved and DNA/RNA extracted. Thirty-nine DNA samples of sufficient quality and quantity from the 15 patients were subjected to array-CGH analysis to identify recurrent genomic aberrations that occur through the course of disease.

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JFMC46-1201

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