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Lobectomy versus Segmentectomy for Clinical Stage IA3 Pure-solid Non-small Cell Lung Cancer: a Phase III Randomized Trial (STEP UP trial) (WJOG 16923L)

Lobectomy versus Segmentectomy for Clinical Stage IA3 Pure-solid Non-small Cell Lung Cancer: a Phase III Randomized Trial (STEP UP trial) (WJOG 16923L) - Lobectomy versus Segmentectomy for Clinical Stage IA3 Pure-solid Non-small Cell Lung Cancer: a Phase III Randomized Trial (STEP UP trial) (WJOG 16923L)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000052064
Enrollment
520
Registered
2023-11-01
Start date
2024-01-12
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

clinical stage IA3 peripheral pure-solid non-small cell lung cancer

Interventions

Pulmonary lobectomy Pulmonary segmentectomy

Sponsors

West Japan Oncology Group
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Inclusion criteria at primary registration 1) Fulfills all the following conditions on imaging studies (i) cT1cN0M0 (stage IA3) NSCLC is suspected (ii) Center of the tumor is located in the outer third of the lung field. (iii) Pure-solid tumor (C/T ratio = 1, the absence of ground-glass opacity) (iv) The tumor is not located at middle lobe. 2) No satellite tumors 3) Aged 18 years or older 4) Written informed consent 5) Fulfills both of the following conditions (i) Predicted postoperative FEV1.0 >= 800 mL (ii) Preoperative resting SpO2 >= 93%. If the resting SpO2 is <93%, PaO2 is >= 65 mmHg. 6) PS of 0 to 1 7) Sufficient organ function. (i) White blood cell count >= 3,000/mm3 (ii) Hemoglobin >= 8.0 g/dL (iii) Platelet count >= 100,000/mm3 (iv) AST <= 100 U/L (v) ALT <= 100 U/L (vi) Total bilirubin <= 2.0 mg/dL (vii) Creatinine <= 1.5 mg/dL 8) No prior ipsilateral pulmonary resection (prior diagnostic thoracoscopy is allowed). 9) No prior chemotherapy or radiation therapy for any malignant diseases within 2 years. (Hormone therapy is allowed) Inclusion criteria at Secondary registration (intraoperative) 1) Within 28 days of the primary registration 2) Histologically confirmed either adenocarcinoma, adenosquamous carcinoma, large cell carcinoma, sarcomatoid carcinoma, other epithelial tumors, salivary gland-type tumors, non-small cell lung cancer - NOS, large cell neuroendocrine carcinoma or carcinoid tumor. 3) Technically possible to perform lobectomy and segmentectomy. 4) No signs of malignant effusion, dissemination, regional lymph node metastasis, and direct invasion into surrounding organs except for adjacent lung regions.

Exclusion criteria

Exclusion criteria: 1) History of synchronous or metachronous (within 2 years) malignancies with 5-year relative survivals of less than 95% at the time of diagnosis. 2) Local or systemic active infection requiring treatment. 3) Pregnant, lactating, possibly currently pregnant. 4) Psychosis. 5) Systemic administration of steroids or immunosuppressive agents. 6) Patient who has severe drug allergy. 7) Comorbidities (i) Diagnoses of interstitial pneumonia, pulmonary fibrosis, or severe pulmonary emphysema. (ii) Uncontrollable diabetes (HbA1c > 8%). (iii) Uncontrollable hypertension. (iv) Unstable angina or history of myocardial infarction within 6 months prior to enrollment. (v) Uncontrollable heart valve disease, dilated cardiomyopathy, or hypertrophic cardiomyopathy.

Design outcomes

Primary

MeasureTime frame
overall survival

Secondary

MeasureTime frame
relapse-free survival, postoperative respiratory function at 6 months and 1 year (FVC and FEV1.0), proportion of respiratory failure, proportion of cerebrovascular disease, cumulative incidence of death from other than primary lung cancer, cumulative incidence of local recurrence, proportion of patients who complete segmentectomy, number of resected segments, operative time, blood loss, adverse events.

Countries

Japan

Contacts

Public ContactNaoki Ishizuka

West Japan Oncology Group WJOG datacenter

datacenter@wjog.jp06-6633-7400

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026