PMID- 10037371 OWN - NLM STAT- MEDLINE DCOM- 19990318 LR - 20190621 IS - 0022-5347 (Print) IS - 0022-5347 (Linking) VI - 161 IP - 1 DP - 1999 Jan TI - Urinary interleukin-2 monitoring during prolonged bacillus Calmette-Guerin treatment: can it predict the optimal number of instillations? PG - 67-71 AB - PURPOSE: In patients with superficial bladder cancer treated with a first 6-week instillation course of bacillus Calmette-Guerin (BCG) the induction pattern of urinary interleukin (IL)-2 has been described, and the levels of urinary IL-2 were associated with the clinical response to BCG treatment. We evaluated urinary IL-2 kinetics in patients with recurrent superficial bladder tumor receiving a second or third 6-week BCG instillation course. To our knowledge there have been no studies of prolonged BCG treatment and urinary cytokine responses. MATERIALS AND METHODS: Urinary IL-2 was determined in 12 patients with superficial transitional cell carcinoma of the bladder receiving a complete (6-week) second or third BCG instillation course and in 3 patients receiving 3 BCG instillations during a maintenance schedule at month 3. Urinary IL-2 was determined with an enzyme-linked immunosorbent assay using an oligoclonal system. RESULTS: Of 12 patients 10 had a urinary IL-2 positive response during the subsequent BCG course and at week 1 urinary IL-2 was already increased. Comparing the urinary IL-2 kinetics observed during a second or third with a first course, urinary IL-2 tended to be higher during the first and lower during the last weeks. If the interval between subsequent courses was short (12 months or less) significantly higher urinary IL-2 levels at weeks 1 and 2, and a lower level at week 6 were observed. CONCLUSIONS: During a repeat BCG instillation course urinary IL-2 reached a maximum at an earlier week, especially if the interval between the subsequent courses was short. Since an association between urinary IL-2 levels and response to BCG treatment during an induction course has been observed, these immunological data argue in favor of a limited number of instillations during prolonged BCG therapy which could reduce side effects as well as costs. FAU - de Reijke, T M AU - de Reijke TM AD - Department of Urology, University of Amsterdam, The Netherlands. FAU - De Boer, E C AU - De Boer EC FAU - Kurth, K H AU - Kurth KH FAU - Schamhart, D H AU - Schamhart DH LA - eng PT - Clinical Trial PT - Journal Article PL - United States TA - J Urol JT - The Journal of urology JID - 0376374 RN - 0 (Adjuvants, Immunologic) RN - 0 (BCG Vaccine) RN - 0 (Interleukin-2) SB - IM MH - Adjuvants, Immunologic/*administration & dosage MH - Administration, Intravesical MH - BCG Vaccine/*administration & dosage MH - Carcinoma, Transitional Cell/*therapy/*urine MH - Humans MH - Interleukin-2/*urine MH - Monitoring, Physiologic MH - Neoplasm Recurrence, Local/*therapy/*urine MH - Predictive Value of Tests MH - Time Factors MH - Urinary Bladder Neoplasms/*therapy/*urine EDAT- 1999/02/26 00:00 MHDA- 1999/02/26 00:01 CRDT- 1999/02/26 00:00 PHST- 1999/02/26 00:00 [pubmed] PHST- 1999/02/26 00:01 [medline] PHST- 1999/02/26 00:00 [entrez] AID - S0022-5347(01)62065-2 [pii] AID - 10.1097/00005392-199901000-00024 [doi] PST - ppublish SO - J Urol. 1999 Jan;161(1):67-71. doi: 10.1097/00005392-199901000-00024.