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Anatomical segmentectomy versus wedge resection in high-risk operable patients with clinical stage IA non-small cell lung cancer: A randomized phase III trial. (JCOG1909, ANSWER)

Anatomical segmentectomy versus wedge resection in high-risk operable patients with clinical stage IA non-small cell lung cancer: A randomized phase III trial. - Anatomical segmentectomy versus wedge resection in high-risk operable patients with clinical stage IA non-small cell lung cancer: A randomized phase III trial.

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000040089
Enrollment
370
Registered
2020-04-07
Start date
2020-04-07
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 IA non-small cell lung cancer

Interventions

A:Wedge resection B:Anatomical segmentectomy

Sponsors

Japan Clinical Oncology Group (JCOG)
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)cT1N0M0 NSCLC is suspected (ii)Center of the tumor is located in the outer third of the lung field. (iii)Maximum diameter of the tumor <= 3 cm (iv)C/T ratio is > 0.5 (2)No satellite tumors (3)Fulfills the definition for high-risk in lung lobectomy (fulfills more than one major criterion or more than 2 minor criteria) Major criteria (a)%FEV1 <= 50% (b)%DLCO <= 50% Minor criteria (c)Aged 75 years or older (d)%FEV1 > 50% and %FEV1 <= 60% (e)%DLCO > 50% and %DLCO <= 60% (f)Pulmonary hypertension (g)Left ventricular dysfunction (h)PaO2 <= 55 mmHg or SpO2 <= 88% (i)PaCO2 > 45 mmHg (j)Modified Medical Research Council Dyspnea Scale grade 3 or higher (4)Negative for neuroendocrine tumor if cytology tests are performed (5)Aged 20 years or older (6)PS of 0 to 1 (7)No prior medical treatment for any type of tumor in the past 2 years (hormone therapy is allowed) (8)No prior radiation therapy on the lungs, hilum or mediastinum (9)Fulfills both of the following conditions (i)Predicted postoperative %FEV1 >= 30% (ii)Predicted postoperative %DLCO >= 30% (10)Sufficient organ function. (All test results must be obtained within 28 days before enrollment.) (i)White blood cell count >= 3,000/mm3 (ii)Hemoglobin >= 8.0 g/dL (iii)Platelet count >= 100,000/mm3 (iv)Total bilirubin <= 2.0 mg/dL (v)AST <= 100 U/L (vi)ALT <= 100 U/L (vii)Creatinine <= 1.5 mg/dL (11)No sign of ischemia on latest ECG. (12)Written informed consent. Secondary registration (intraoperative) criteria (1)Within 14 days of the primary registration (2)Histological confirmation of NSCLC before surgery or during surgery by diagnostic wedge resection or needle biopsy. (3)Technically possible to perform wedge resection and anatomical 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) Active infection requiring systemic therapy. (3) Fever of higher than 38.0 degrees Celsius at the time of enrollment. (4) Pregnant, possibly pregnant, within 28 days after delivery, breastfeeding female or males expecting conception of their child. (5) Psychiatric illnesses or symptoms affecting daily lives. (6) Systemic administration of steroids or immunosuppressive agents either orally or intravenously. (7) Uncontrollable diabetes (HbA1c > 8%). (8) Uncontrollable hypertension. (9) Unstable angina (diagnosis or worsening of chest pain within 3 weeks) or history of myocardial infarction within 6 months prior to enrollment. (10) Uncontrollable heart valve disease, dilated cardiomyopathy, or hypertrophic cardiomyopathy. (11) Diagnoses of interstitial pneumonia, pulmonary fibrosis, or both, on chest CT.

Design outcomes

Primary

MeasureTime frame
Overall survival

Secondary

MeasureTime frame
Adverse events, postoperative respiratory function, relapse-free survival, proportion of local recurrences, operation time, blood loss.

Countries

Japan

Contacts

Public ContactYasuhiro Tsutani

JCOG1909 Coordinating Office Surgical Oncology, Hiroshima University Hospital

JCOG_sir@ml.jcog.jp082-257-5869

Outcome results

None listed

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