GALENOS 1 in Head and Neck, Lung, and Rectal Cancer Patients

Who May Qualify: - Written willing to sign a consent form provided before study procedures - Male or female participants aged 18 years or older - Histological or cytological documentation of head and neck squamous cell carcinoma, locally advanced rectal cancer, or lung cancer - Candidate for standard antineoplastic treatment according to clinical practice - ECOG Performance Status score less than 2 - Adequate kidney, liver, and bone marrow function - Ability to adhere to study visits and protocol requirements Who Should NOT Join This Trial: - Incomplete recovery from surgery before start of antineoplastic treatment - Other additional malignancies progressing or requiring active treatment within the previous 3 years, except localized basal cell carcinoma, localized squamous cell carcinoma of the skin, or cervical carcinoma in situ - Active infection requiring systemic antibiotic therapy Serious or unstable medical conditions, psychiatric disorders, or substance abuse that would interfere with study compliance - Receipt of any live vaccine within 30 days before planned start of study therapy - Active cardiac pacing/pacing implants/neurostimulators/hearing systems not compatible with bioimpedance analysis - Edema and/or ascites interfering with body weight evaluation or bioimpedance analysis - Enteral or parenteral nutritional support at baseline Always talk to your doctor about whether this trial is right for you.