TY - JOUR
T1 - Outcome of pediatric renal tumor treated using the Japan Wilms Tumor Study-1 (JWiTS-1) protocol
T2 - A report from the JWiTS Group
AU - Oue, Takaharu
AU - Fukuzawa, Masahiro
AU - Okita, Hajime
AU - Mugishima, Hideo
AU - Horie, Hiroshi
AU - Hata, Jun Ichi
AU - Saito, Masahiro
AU - Nozaki, Miwako
AU - Chin, Motoaki
AU - Nakadate, Hisaya
AU - Hinotsu, Shiro
AU - Koshinaga, Tsugumichi
AU - Kaneko, Yasuhiko
AU - Kitano, Yoshihiro
AU - Tanaka, Yukichi
N1 - Funding Information:
We thank the investigators of the JWiTS and the many pathologists, surgeons, pediatricians, and radiation oncologists who managed the children enrolled on the JWiTS. This work was supported by a Grant-in-Aid for scientific research (no. 20390452) from the Japanese Ministry of Education, Culture, Sports, Science and Technology.
PY - 2009/11
Y1 - 2009/11
N2 - Purpose: In 1996, the Japan Wilms Tumor Study (JWiTS) group was founded to elucidate the efficacy and safety of the regimen established by the National Wilms Tumor Study (NWTS) group in the USA, and a multicenter cooperative study (JWiTS-1) was started in Japan. This report reviews the results of JWiTS-1. Methods: A total of 307 patients with malignant renal tumor were enrolled in the JWiTS-1 study between 1996 and 2005. Central pathological diagnosis and follow-up data were available in 210 cases. The protocol regimens were similar to the NWTS-5 regimens. Clinical stage was classified according to the Japanese Staging System. Results: Five-year overall survival (OS) rate was 91.1% for nephroblastoma, 72.9% for clear cell sarcoma of the kidney (CCSK), and 22.2% for rhabdoid tumor of the kidney (RTK). In the nephroblastoma patients, 5-year OS was 90.5% for stage I disease, 92.2% for stage II, 90.9% for stage III, 86.7% for stage IV, and 78.7% for stage V. Conclusions: The OS of patients in the JWiTS-1 study were comparable with the results of other multicenter studies in the USA and Europe. The outcome for patients with nephroblastoma and CCSK was fair. In contrast, the cure rate for those with RTK was not satisfactory. New treatment strategies are needed for patients with RTK.
AB - Purpose: In 1996, the Japan Wilms Tumor Study (JWiTS) group was founded to elucidate the efficacy and safety of the regimen established by the National Wilms Tumor Study (NWTS) group in the USA, and a multicenter cooperative study (JWiTS-1) was started in Japan. This report reviews the results of JWiTS-1. Methods: A total of 307 patients with malignant renal tumor were enrolled in the JWiTS-1 study between 1996 and 2005. Central pathological diagnosis and follow-up data were available in 210 cases. The protocol regimens were similar to the NWTS-5 regimens. Clinical stage was classified according to the Japanese Staging System. Results: Five-year overall survival (OS) rate was 91.1% for nephroblastoma, 72.9% for clear cell sarcoma of the kidney (CCSK), and 22.2% for rhabdoid tumor of the kidney (RTK). In the nephroblastoma patients, 5-year OS was 90.5% for stage I disease, 92.2% for stage II, 90.9% for stage III, 86.7% for stage IV, and 78.7% for stage V. Conclusions: The OS of patients in the JWiTS-1 study were comparable with the results of other multicenter studies in the USA and Europe. The outcome for patients with nephroblastoma and CCSK was fair. In contrast, the cure rate for those with RTK was not satisfactory. New treatment strategies are needed for patients with RTK.
KW - Clinical trials
KW - Group study
KW - Japan
KW - Survival
KW - Wilms tumor
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U2 - 10.1007/s00383-009-2449-0
DO - 10.1007/s00383-009-2449-0
M3 - Article
C2 - 19701757
AN - SCOPUS:70350198043
SN - 0179-0358
VL - 25
SP - 923
EP - 929
JO - Pediatric surgery international
JF - Pediatric surgery international
IS - 11
ER -