Bintrafusp Alfa Before Surgery for the Treatment of Untreated Resectable Non-small Cell Lung Cancer

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• Patients with stage I-IIIA disease and IIIB (T3N2 only, and N2 single station), according to American Joint Committee on Cancer (AJCC) 8th edition, are eligible for arm A of the study. Patients with stage III, N2 single station, must not have more than one mediastinal lymph node station involved by tumor
• All patients must have lymph node evaluation of contralateral stations 2 and/or 4 to exclude N3 disease
• The patient must be a suitable candidate for surgery, in the opinion of the treating physician
• Predicted forced expiratory volume in 1 second (FEV1) \>= 50%
• Predicted carbon monoxide diffusing capability test (DLCO) \>= 50%
• Signed and dated written informed consent must be provided by the patient prior to admission to the study in accordance with International Conference on Harmonisation Good Clinical Practice (ICH-GCP) guidelines and to the local
• Eastern Cooperative Oncology Group (ECOG) performance status score 0-1
• Absolute neutrophil count (ANC): \>= 1.5 X 10\^9 /L
• Hemoglobin: \>= 9.0 g/dL
• Platelets \>= 100 X 10\^9 /L
• Total bilirubin: =\< 1.5 X upper limit of normal (ULN) (except subjects with Gilbert Syndrome, who can have total bilirubin \< 3.0 mg/dL)
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT): =\< 3 X ULN
• Creatinine: =\< 1.5 X ULN or calculated creatinine clearance: \>= 50 mL/min or 24-hour urine creatinine clearance: \>= 50 mL/min
• Mixed SCLC and NSCLC histology
• Major surgery within 4 weeks prior to the first dose of study intervention
• Thoracic radiation therapy (RT) of \> 30 Gy within 6 months prior to the first dose of study intervention.
• Prior systemic therapy, including treatment with anti-PD-1/PD-L1 therapies and M7824, for treatment of the current lung cancer
• Currently receiving cancer therapy (chemotherapy, radiation therapy, immunotherapy, or biologic therapy) or investigational anti-cancer drug
• Previous malignant disease (other than the target malignancy to be investigated in this study) within the last 2 years. Participants with a history of cervical carcinoma in situ, superficial or noninvasive bladder cancer, or basal cell or squamous cell carcinoma in situ previously treated with curative intent are NOT excluded. Participants with other localized malignancies treated with curative intent need to be discussed with the principal investigator (PI) of the study
• Receipt of any organ transplantation, including allogeneic stem-cell transplantation, but with the exception of transplants that do not require immunosuppression (e.g., corneal transplant, hair transplant)
• Has interstitial lung disease (ILD) OR has had a history of pneumonitis that has required oral or IV steroids
• Pregnant or lactating female:
• * Women of childbearing potential (WOCB) must have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of human chorionic gonadotropin \[HCG\]) within 72 hours prior to the start of immunotherapy.
• * Women of childbearing potential is defined as any female who has experienced menarche and who has not undergone surgical sterilization (hysterectomy or bilateral oophorectomy) or who is not postmenopausal. Menopause is defined clinically as 12 months of amenorrhea in a woman over 45 in the absence of other biological or physiological causes
• Unwillingness or inability to follow the procedures required in the protocol
• Any serious or uncontrolled medical disorder that, in the opinion of the investigator, may increase the risk associated with study participation or study drug administration, impair the ability of the subject to receive protocol therapy, or interfere with the interpretation of study results. Participants with history of bleeding diathesis or recent major bleeding events considered by the Investigator as high risk for investigational drug treatment are also excluded
• Subjects with active, known or suspected autoimmune disease. Subjects with vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger are permitted to enroll
• Subjects with a condition requiring systemic treatment with either corticosteroids (\> 10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 days of study drug administration. Inhaled or topical steroids and adrenal replacement doses \> 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease
• Subjects are permitted to use topical, ocular, intra-articular, intranasal, and inhalational corticosteroids (with minimal systemic absorption). Physiologic replacement doses of systemic corticosteroids are permitted, even if \> 10 mg/day prednisone equivalents. A brief course of corticosteroids for prophylaxis (e.g., contrast dye allergy) or for treatment of non-autoimmune conditions (e.g., delayed-type hypersensitivity reaction caused by contact allergen) is permitted
• History of positive hepatitis B virus surface antigen (HBV sAg) or hepatitis C virus ribonucleic acid indicating acute or chronic infection
• History of positive human immunodeficiency virus or known acquired immunodeficiency syndrome
• History of severe hypersensitivity reaction to any monoclonal antibody and/or to study drug components, any history of anaphylaxis, or recent (within 5 months) history of uncontrolled asthma
• Serious illness or concomitant non-oncological disease such as neurologic, psychiatric, infectious disease or laboratory abnormality that may increase the risk associated with study participation or study drug administration and in the judgment of the investigator would make the patient inappropriate for entry into the study
• Vaccine administration within 4 weeks of M7824 administration. Vaccination with live vaccines while on trial is prohibited. Administration of inactivated vaccines is allowed (for example, inactivated influenza vaccines)
• Patients who are sexually active, with preserved reproductive capacity, and unwilling to use a medically acceptable method of contraception (e.g. such as implants, injectables, combined oral contraceptives, some intrauterine devices or vasectomized partner for participating females, condoms for participating males) during and after the trial as detailed below:
• * WOCBP should use an adequate method to avoid pregnancy for 65 days after the last dose of investigational drug.
• * Men who are sexually active with WOCBP must use any contraceptive method with a failure rate of less than 1% per year.
• * Men receiving immunotherapy and who are sexually active with WOCBP will be instructed to adhere to contraception for a period of 125 days after the last dose of investigational product.
• * Women who are not of childbearing potential as well as azoospermic men do not require contraception
• Psychological, familial, sociological or geographical factors potentially hampering compliance with the study protocol and follow-up schedule