Study for the Evaluation of the Degree of Skin Satisfaction of a Cosmetic Cream for Sensitive Skin in Oncological Patients Affected by a Palmoplantar Polyneuropathy Secondary to Chemotherapy.

This proof-of-concept clinical trial is a multicenter, double-blind, randomized, placebo-controlled research project approved by the ethics committees of all participating hospitals. Medical oncologists have been responsible for recruiting volunteers, checking that they meet the inclusion and exclusion criteria, obtaining signed informed consent, completing the data collection booklet and collecting the occurrence of CIPN and the degree of CIPN, along with patient follow-up. Once informed consent has been signed, the patients are provided with a PB-011 or the PB-012 formulation and started a daily application on their hands. After the onset of sensory symptoms on hands and/or feet, participants applied the cream twice daily on hands and feet and began responding questionnaires to evaluate the severity of sensorial symptoms.

Inclusion criteria

• To be older than 18 year old
• To be able to complete questionnaires
• Give informed consent in writing
• Being able to apply the product under test by oneself
• To have been diagnosed with stage I-III primary cancer
• To have received a maximum of one treatment session with chemotherapy (derivatives of taxane, platinum or vincristines)
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-2
• Life expectancy greater than or equal to 6 months

Exclusion criteria

• Not being or having been treated with antidepressants, antiepileptics or HIV medication in the last 3 months
• Pre-existing peripheral neuropathies not related to chemotherapy treatment
• Pre-existing neurodegenerative or neuromuscular disease or history of stroke
• Family history of neuropathic diseases
• Having suffered in the last 6 months: myocardial infarction, unstable angina, stroke, transient ischemic attack, decompensated heart failure requiring hospitalization or class III/IV heart failure.
• Being receiving investigational treatment (being involved in a clinical trial
• Evidence or indication of metastasis affecting the Central Nervous System
• Use of immunosuppressive or immunomodulatory medication that may lead to immunodeficiencies
• Not being treated with topical palmar and/or plantar medication
• Known hypersensitivity to capsaicin
• Having reduced capacity for expression or response to forms
• Not have been under general anesthesia for at least one month before starting the study
• Complication of peripheral polyneuropathy symptoms that require the use of specific medication.