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BACKGROUND The most common regimen of stereotactic body radiotherapy (SBRT) for stage I nonsmall cell lung cancer in Japan is 48 grays (Gy) in 4 fractions over 4 days. Radiobiologically, however, higher doses are necessary to control larger tumors, and interfraction intervals should be >24 hours to take advantage of reoxygenation. In this study, the authors(More)
Human liver dihydrodiol dehydrogenase (DD; EC exists in isoforms (DD1, DD2 and DD4) composed of 323 amino acids. DD1 and DD2 share 98% amino acid sequence identity, but show lower identities (approx. 83%) with DD4, in which a marked difference is seen in the C-terminal ten amino acids. DD4 exhibits unique catalytic properties, such as the ability(More)
PURPOSE To explore a more effective treatment for localized nasal natural killer (NK)/T-cell lymphoma, we conducted a phase I/II study of concurrent chemoradiotherapy. PATIENTS AND METHODS Treatments comprised concurrent radiotherapy (50 Gy) and 3 courses of dexamethasone, etoposide, ifosfamide, and carboplatin (DeVIC). Patients with a newly diagnosed(More)
PURPOSE To evaluate retrospectively the safety and efficacy of high-dose proton beam therapy (PBT) for Stage I non-small-cell lung cancer (NSCLC). METHODS AND MATERIALS Between 1999 and 2003, 37 patients were treated in our institution. The indications for PBT were pathologically proven NSCLC, clinical Stage I, tumor size < or =5 cm, medically inoperable(More)
OBJECTIVE No randomized controlled trials comparing stereotactic body radiotherapy and lobectomy for operable early-stage non-small-cell lung cancer have been successfully conducted. This study compared survival outcomes in two multi-institutional clinical trials for stereotactic body radiotherapy (Japan Clinical Oncology Group JCOG0403) and lobectomy(More)
PURPOSE The aim of this study was to assess interinstitutional variations in planning for stereotactic body radiation therapy (SBRT) for lung cancer before the start of the Japan Clinical Oncology Group (JCOG) 0403 trial. METHODS AND MATERIALS Eleven institutions created virtual plans for four cases of solitary lung cancer. The created plans should(More)
Using rapid amplification of cDNA ends PCR, a cDNA species for diacetyl reductase (EC was isolated from hamster liver. The encoded protein consisted of 244 amino acids, and showed high sequence identity to mouse lung carbonyl reductase and hamster sperm P26h protein, which belong to the short-chain dehydrogenase/reductase family. The enzyme(More)
A multicentre phase II trial of stereotactic body radiotherapy for T1N0M0 non-small cell lung cancer was initiated in Japan as the Japan Clinical Oncology Group trial (JCOG0403). Before starting the trial, a decision was made to evaluate the treatment machine and treatment planning in participating institutions to minimize the variations of the prescription(More)
Human liver contains three isoforms (DD1, DD2 and DD4) of dihydrodiol dehydrogenase with 20alpha- or 3alpha-hydroxysteroid dehydrogenase activity; the dehydrogenases belong to the aldo-oxo reductase (AKR) superfamily. cDNA species encoding DD1 and DD4 have been identified. However, four cDNA species with more than 99% sequence identity have been cloned and(More)