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Massimo Mammucari,1 Teresa Paolucci,2 Domenico Russo,3 Enrica Maggiori,1 Raffaele Di Marzo,4 Alberto Migliore,5 Umberto Massafra,5 Gianpaolo Ronconi,6 Paola Emilia Ferrara,6 Fabio Gori,7 Barbara Bifarini,7 Stefano Brauneis,8 Renato Vellucci,9 Rocco Domenico Mediati,9 Bartolomeo Violo,10 Silvia Natoli,11 Carmen Pediliggieri,12 Cristiana Di Campli,12 Maria Chiara Collina12 1Primary Care Unit, ASL RM 1, Rome, Italy; 2Unit of Physical Medicine and Rehabilitation, G. D’ Annunzio University of Chieti-Pescara, Department of Oral Medical Science and Biotechnology (DSMOB), Chieti, Italy; 3“San Marco” Hospice and Palliative Care, Latina, Italy; 4Member of the Italian Society of Mesotherapy, Rome, Italy; 5Unit of Rheumatology, San Pietro Fatebenefratelli Hospital, Rome, Italy; 6Physical Medicine and Rehabilitation Unit, IRCCS, Catholic University of Sacred Heart, Rome, Italy; 7Section of Anaesthesia, Intensive Care, and Pain Medicine, University Hospital Santa Maria Della Misericordia, Perugia, Italy; 8Pain Centre “Enzo BorzomatI”, University Hospital of Rome “Policlinico Umberto I”, Rome, Italy; 9Anaesthesiology Department, University Hospital Careggi, Florence, Italy; 10Pain Therapy Unit, S. Spirito Nuovo Regina Margherita Hospital, Rome, Italy; 11Department of Clinical Science and Translational Medicine, Tor Vergata University, Rome, Italy; 12Department of Vascular Surgery, Limb Salvage and Diabetic Foot, IDI-IRCCS, Rome, ItalyCorrespondence: Massimo MammucariPrimary Care Unit, Local Health, ASL RM 1, Rome, 00165, ItalyTel +39-06-61560695 Email massimo.mammucari@libero.itAbstract: Mesotherapy (local intradermal therapy, LIT) is a technique used to slowly spread drugs in tissues underlying the site of injection to prolong the pharmacological effect with respect to intramuscular injection. Recommendations for proper medical use of this technique have been made for pain medicine and rehabilitation, chronic venous disease, sport medicine, musculoskeletal disorders, several dermatological conditions, skin ageing, and immune-prophylaxis. Although mesotherapy is considered a valid technique, unresolved questions remain, which should be answered to standardize methodology and dosing regimen as well as to define the right indications in clinical practice. New randomized controlled trials are needed to test single products (dose, frequency of administration, efficacy and safety). Even infiltration of substances for dermo-cosmetic purposes must be guided by safety and efficacy tests before being proposed by mesotherapy. In this article, we put forth a preclinical and clinical research plan and a health technology assessment as a call to action by doctors, researchers and scientific societies to aid national health authorities in considering mesotherapy for prevention, treatment and rehabilitation paths.Keywords: mesotherapy, intradermal therapy, research plan

Stefano De Santis,1 Maria Domenica Simone,2 Sebastiano Mercadante,3 Rocco Domenico Mediati,4 Renato Vellucci,4 Paolo Marchetti,5 Giuseppe Tonini,6 Arturo Cuomo,7 Augusto Caraceni,8 Silvia Natoli,9 Grazia Armento,6 Livio Blasi,10 Massimo Mammucari11 On behalf of the IOPS-MS Study Group1Palliative Care and Oncologic Pain Service, S. Camillo-Forlanini Hospital, Rome, Italy; 2Hematology and BMT Unit, S. Camillo-Forlanini Hospital, Rome, Italy; 3Anesthesia and Intensive Care & Pain Relief and Supportive Care, La Maddalena, Palermo, Italy; 4Palliative Care and Pain Therapy Unit, Careggi Hospital, Florence, Italy; 5Molecular and Clinical Medicine Medical Oncology, La Sapienza University of Rome, Rome, Italy; 6Department of Medical Oncology, Campus Bio-Medico University of Rome, Rome, Italy; 7Anesthesiology, Resuscitation, and Pain Therapy Department, National Cancer Institute, IRCCS Foundation, Naples, Italy; 8Palliative Care, Pain Therapy and Rehabilitation, National Cancer Institute, IRCCS Foundation, Milan, Italy; 9Department of Clinical Science and Translational Medicine – University of Rome Tor Vergata and Department of Emergency, Admission and Critical Area – Policlinic of Tor Vergata, Rome, Italy; 10Medical Oncology Unit, ARNAS Ospedale Civico Di Cristina Benfratelli, Palermo, Italy; 11Primary Care Unit, ASL RM1, Rome, 00165, ItalyCorrespondence: Stefano De Santis Email sdesantis@scamilloforlanini.rm.itBackground: International guidelines recommend moderate-to-severe cancer pain to be treated with strong opioids. However, pain management remains an unsolved matter, at least in the demanding oncology and palliative care setting. Although cancer pain consists of multiple components, which interact in complex ways where combination therapy can better intercept multiple pain characteristics, few studies have used a non-opioid/opioid association to exploit possible synergistic actions. Even the efforts of a recent approach emphasizing appropriate pain assessment and accurate classification to obtain personalized pain management have not produced a satisfactory analgesic strategy.Objective: This analysis was intended to evaluate the effectiveness of the immediate release fixed combination of oxycodone/acetaminophen (OxyIR/Par) for the treatment of moderate-to-severe intensity background pain used alone or in combination with other strong opioids in cancer patients with breakthrough cancer pain (BTcP). This is a secondary analysis of a wider observational, prospective, multicenter study [Italian Oncologic Pain multiSetting Multicentric Survey (IOPS-MS)] performed on 179 patients treated with opioids for cancer pain who received the fixed combination of oxycodone/acetaminophen (OxyIR/Par) for the treatment of background pain (BGP).Results: Cancer patients with breakthrough cancer pain and controlled BGP (Background Pain) were classified according to the presence of analgesic therapy with tablets of fixed combination OxyIR/Par alone (group A, n=120) or tablets of fixed combination OxyIR/Par combined with other strong opioids (group B, n=59). Clinical features of group A were different to group B: higher mean Karnofsky Performance Status Index 70.3% (95% CI=67.2– 73.5; median=70, CI=60– 80) vs 58.3 (95% CI=53.4– 63.2; median=50, CI=45– 70) (P< 0.001), and mainly group A patients were treated in an ambulatory setting (55.0% group A vs 33.9% group B) (p< 0.001). Both groups had managed BGP with similar mean dosages (group A: 12.0, CI=10.5– 13.4; group B: 13.1, CI=11.0– 15.1) and frequencies of OxyIR/Par alone for group A and in association to other opioids for group B, but Breakthrough cancer Pain (BTcP) exhibited different characteristics in the two groups, showing a lower mean intensity numerical rating scale (NRS) of 7.5 (95% CI=7.2– 7.7; median=7, CI=7– 8 group A) vs 7.9 (95% CI=7.6, 8.2; median= 8, CI=7– 9 group B) (P=0.04) and a higher percentage of patients had a faster onset, defined as the maximum intensity reached in less than 10 minutes, 81.7% (N=98) in group A vs 59.3% (n=35) in group B (P=0.002).Conclusion: This is the first analysis about the efficacy of an immediate-release fixed combination of OxyIR/Par in the real world for moderate-to-severe background cancer pain and breakthrough cancer pain. The oral fixed combination OxyIR/Par provided an adequate level of analgesia for moderate–severe background cancer pain, in a different cohort of cancer patients with different performance status, both in ambulatory and palliative settings. The low dosage of fixed combination OxyIR/Par was effective alone or in association with other opioids.Keywords: analgesia, combination of oxycodone/acetaminophen, cancer pain, breakthrough cancer pain

Renato Vellucci,1 Rocco Domenico Mediati,1 Silvia Gasperoni,1 Massimo Mammucari,2 Franco Marinangeli,3 Patrizia Romualdi4 1Palliative Care and Pain Therapy Unit, University Hospital of Careggi, Florence, 2Primary Care Unit, ASL RM 1, Rome, 3Department of Life, Health and Environmental Sciences, University of L’Aquila, l’Aquila, 4Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy Abstract: Breakthrough cancer pain (BTcP) is a common condition in oncological patients. However, its management is still suboptimal. Improved knowledge of BTcP and its management in clinical practice may have immediate importance for all physicians involved in the supportive care of cancer patients. This review critically discusses the most important concepts for the correct diagnosis of BTcP and presents some intriguing cases of the management of this condition in clinical practice. Overall, the most appropriate therapeutic choice appears to be a rapid-onset opioid (ROO), and in particular, the nasal route of administration is the quickest and most convenient mode of administration for the management of BTcP, especially when the patient needs rapid resolution of pain. To this end, intranasal fentanyl spray may have a particular relevance in clinical practice. Future research should focus on accepted definitions of BTcP to investigate the optimal management of this highly heterogeneous pain condition. Therapeutic decision-making of patients, clinicians, and payers will likely be driven from results of well-designed clinical trials of ROOs. Keywords: breakthrough cancer pain, rapid-onset opioid, intranasal fentanyl spray