Geriatric and Oncological Evaluation With Technology for Holistic Healthcare Management for Older Multimorbid Patients.

General inclusion criteria: 1. Age ≥ 70 years old, 2. New or progressive cancer (breast, lung, colorectal, prostate) fulfilling the tumour specific inclusion criteria, 3. Estimated life expectancy greater than 6 months, 4. At least one moderate/severe multimorbidity inclusion criteria other than current cancer (separate list), 5. Patients must be willing and able to comply with study procedures, 6. Voluntarily signed and dated written informed consents prior to any study specific procedure, 7. QLQ-C30 Quality of Life Questionnaire fully completed at baseline, before inclusion. Tumour specific inclusion criteria: 8\. Specific inclusion criteria for breast cancer: 8.1. Non-metastatic breast cancer (M0): * No prior treatment for the current breast cancer. * All 3 criteria required: * Clinical staging: cT2-3-4 Nany, or cTany N1-2-3, * The cancer specialist considers\* surgery, * The cancer specialist considers\* radiotherapy and/or chemotherapy. 8.2. Metastatic breast cancer (M1): Both criteria required: * The cancer specialist considers\* chemotherapy or PARP-inhibitors or mTOR-inhibitors / PIK3CA inhibitors; Previous endocrine therapy +/- CDK4/6 inhibitors is allowed, * The patient received maximum 1 prior line of chemotherapy for metastatic disease. \*'consider' implies that this treatment may be a treatment option for this patient in this particular setting. If at a later point, a different treatment choice is made, the patient remains eligible. 9\. Specific inclusion criteria for colorectal cancer: 9.1. Non-metastatic colorectal cancer (M0): * No prior therapy for the current tumour in the recruiting hospital. * At least one of the 3 criteria required: \- The cancer specialist considers\* surgery, \- The cancer specialist considers\* radiotherapy, \- The cancer specialist considers\* chemotherapy. 9.2. Metastatic colorectal cancer (M1): * The cancer specialist considers\* first line systemic therapy and/or radiotherapy (+/- surgery). No previous chemotherapy allowed except adjuvant/perioperative chemotherapy stopped for more than 12 months. \*'consider' implies that this treatment may be a treatment option for this patient in this particular setting. If at a later point, a different treatment choice is made, the patient remains eligible. 10\. Specific inclusion criteria for lung cancer: 10.1. Non-metastatic lung cancer (M0): * No prior therapy for the current tumour in the recruiting hospital. * At least one of the 3 criteria required: * The cancer specialist considers\* surgery (patients considered for treatment with percutaneous thermoablation alone are not eligible), * The cancer specialist considers\* radiotherapy (except SBRT), * The cancer specialist considers\* systemic therapy. Possible systemic therapies are chemotherapy and/or immune therapy and/or targeted therapy. Patients only considered\* for monotherapy with anti-EGFR TKI or somatostatin analog are not eligible. 10.2. Metastatic lung cancer (M1): * The cancer specialist considers\* first or second line systemic therapy. Possible systemic therapies are chemotherapy and/or immune therapy and/or targeted therapy. Patients only considered\* for monotherapy with anti-EGFR TKI or somatostatin analog are not eligible. \*'consider' implies that this treatment may be a treatment option for this patient in this particular setting. If at a later point, a different treatment choice is made, the patient remains eligible. 11\. Specific inclusion criteria for prostate cancer: 11.1. Non-metastatic prostate cancer (M0): one of the following: * First diagnosis M0 prostate cancer (no therapy received yet for prostate cancer): at least one of the 2 criteria required: \- The cancer specialist considers\* radiotherapy, * The cancer specialist considers\* hormone therapy (ADT +/- combination Abiraterone and Prednisone). * Salvage treatment M0 prostate cancer (received prior surgery at least 6 months before): * The cancer specialist considers\* radiotherapy (+/- ADT). * Non-metastatic castration resistant prostate cancer: * The cancer specialist considers\* treatment intensification (ADT + Enzalutamide or Apalutamide or Darolutamide). 11.2. Metastatic prostate cancer (M1): • The cancer specialist considers\* treatment with Abiraterone or Enzalutamide or Apalutamide, or Docetaxel or Cabazitaxel or PARP-inhibitors or Lutetium PSMA. \*'consider' implies that this treatment may be a treatment option for this patient in this particular setting. If at a later point, a different treatment choice is made, the patient remains eligible. Exclusion criteria: 1. Mental illness/cognitive impairment that limits ability to provide consent or complete trial procedures. 2. Participating to an interventional clinical trial with a non-registered anticancer drug or to another geriatric intervention trial. 3. Patients and caregivers are unable or unwilling to use ICT-devices (tablet, computer, smartphone) or the Internet according to protocol. 4. Patient already included in this study. Separate list of severe morbidity criteria: General 1. Two or more unscheduled comorbidity related hospitalisations in the past year (not related to index cancer). 2. Having received out-patient care from two more specialties in the past year (not related to index cancer). Cardiac 3. Any prior symptomatic myocardial infarction. 4. Any past valve replacement, percutaneous coronary intervention), percutaneous transluminal coronary angioplasty) or coronary artery bypass graft. 5. Congestive heart failure under follow-up by a cardiologist. 6. Chronic exertional angina. 7. Regular use of anti-anginal medication. 8. Left ventricular hypertrophy. 9. Dyspnoea or activity restriction secondary to cardiac status. 10. One or more admissions to hospital for cardiac reasons in past year. Vascular 11. Previous vascular intervention. 12. Symptomatic atherosclerotic/peripheral vascular disease. Venous 13. Any history of pulmonary embolism. 14. Use of coumadin/warfarin, heparin, DOAC or NOAC with indication venous disease. Hypertension 15. Need of three or more types of blood pressure medication. Haematopoetic 16. Any chronic hematologic disease. 17. Haemoglobin: \<10 g/dL (6.0 mmol/l) (not related to index cancer). Endocrine 18. Insulin dependence. 19. Diabetes-related complications (retinopathy, neuropathy, nephropathy, coronary artery disease or peripheral arterial disease). 20. Poorly controlled diabetes mellitus or diabetic coma in the past year. 21. Requires adrenal hormone replacement. Pulmonary 22. Dyspnoea at rest. 23. Limited activities secondary to pulmonary status. 24. Requires oral steroids for lung disease. 25. One or more admissions to hospital for pulmonary reasons in past year. 26. Two or more hospitalisations for pneumonia in past five years. Renal 27. eGFR \< 30 ml/min. Hepatobilary 28. Chronic hepatitis. 29. Cirrhosis. 30. Portal hypertension with moderate symptoms. 31. Compensated liver failure. 32. Clinical or lab evidence of biliary obstruction (not related to index cancer). 33. Acute or chronic pancreatitis or hepatitis in past 5 years. Stomach/intestine 34. Recent ulcers (\<6 months) or any history of ulcers requiring hospitalisation. 35. Any history of inflammatory bowel disease. 36. Any swallowing disorder or dysphagia. 37. Chronic diarrhoea (not related to index cancer). 38. Bowel impaction in the past year (not related to index cancer). 39. Status post bowel obstruction (not related to index cancer). 40. Ostomy/stoma in situ (not related to index cancer). Nutrition and weight 41. Weight loss more than 6 kg in past six months. 42. Weight loss more than 3 kg in past 1 month. 43. Significantly decreased food intake. 44. Body mass index \< 19 kg/m2. 45. Body mass index \> 38 kg/m2. Neurologic 46. Status post cerebrovascular accident (CVA) with at least mild residual dysfunction. 47. Any past central nervous system neurosurgical procedure. 48. Neurodegenerative disease including Parkinson's disease, parkinsonism, multiple sclerosis, myasthenia gravis etc.). 49. Requires daily meds for chronic headaches or headaches that regularly interfere with daily activities. Sensory 50. Partially or functionally blind, unable to read newsprint. 51. Functional deafness or conversational hearing impaired despite hearing aid. 52. Laryngectomy. Mobility 53. Requires a walking aid/wheelchair. 54. Difficulties in activities of daily living secondary to mobility impairment. 55. Difficulty walking \>100m without resting. 56. Requires steroids or immunosuppressant medication for arthritic condition or connective tissue disease. 57. Prior or current symptomatic vertebral compression fractures from osteoporosis. Psychiatric 58. Active substance abuse with social, behavioural or medical complications. 59. History of schizophrenia or another psychotic disorder. 60. Requires daily antipsychotic medication. 61. Current usage of daily anti-anxiety medication. 62. Currently meets DSM criteria for major depression or bipolar disorder. 63. One or more episodes of major depression in the past 10 years. 64. Any previous psychiatric hospitalisation. Cognition/Delirium 65. One or more prior deliriums in the past 10 years. 66. Cognitive impairment that does not inhibit patient to provide informed consent and understand study procedures. Previous cancer 67. Another type of cancer than the index cancer with at least one of the following criteria: * Required chemotherapy or radiation therapy in the past 5 years, * Non-curable and/or metastatic cancer. Instrumental Activities of Daily Living (IADL) 68. Care dependent in one or more aspects of the following instrumental activities of daily living (preparing meals, walking outside alone, managing medication). Social 69. Patients has no or very limited support system or informal caregivers.