In 2017, the Lazio Region (Italy) published a care and therapeutic pathway (Percorso Diagnostico Terapeutico Assistenziale [PDTA]) to guide the choice of treatments for human immunodeficiency virus (HIV) patients. Recommendations were based on clinical and economic criteria to guarantee the most appropriate care and sustainability of the regional National Health Service. Our pilot study was conducted to assess how the PDTA impacts clinical decisions and expenditure. Organizational and economic analyses were based on four HIV treatment centers at the regional level.

An ad hoc data collection was conducted. Each center provided data on the volume of prescriptions for each treatment option for the first semester of 2017 and 2018. The period January-June 2017 (H1-2017) represents the scenario pre-PDTA, while January-June 2018 (H1-2018) provides evidence on the first impact of the PDTA. Expenditure was estimated considering prices reported in the PDTA document. For each center, a semi-structured survey collected evidence on which factors influence treatment decisions.

Between H1-2017 and H1-2018 the number of experienced patients increased 10.1 percent (6,580 versus 7,249, respectively), while that of naive patients decreased 3 percent (227 versus 220). More than 80 percent of naive patients were treated with regimes recommended by the PDTA versus 36 percent in H1-2017 and 62 percent in H1-2018 of experienced patients. Regimes with a monthly cost > EUR 700 were preferred. The survey showed that the PDTA is a useful tool for supporting clinical decisions.

Our pilot study provides a snapshot on the impact of a regional HIV PDTA and identifies key aspects for its future update. Personalization of HIV therapies for an aging (5–29% of patients were >65 years in the four centers) and complex (>65% of patients had at least one comorbidity) population should be discussed for a PDTA update. Posology and treatment adherence should be further investigated.

Dalbavancin is a new innovative long-acting antimicrobial treatment that allows clinicians to endorse an early discharge program for patients suffering from acute bacterial skin and skin structure Infections (ABSSSI). The aim of this study was to develop a spending predictor model for evaluating the direct costs associated with the management of ABSSSI from the National Health Service (NHS) perspective of Italy, Spain, and Romania. The main purpose is to compare the hospitalization and drug costs due to the treatment of ABSSSI patients treated with standard antibiotics therapy or innovative long-acting treatment dalbavancin.

A decision-analytic model was performed to evaluate the diagnostic and clinical pathways of ABSSSI patients in the hospital, based on clinicians’ expert opinion. The standard of care scenario was compared with the dalbavancin scenario. The epidemiological and cost parameters were extrapolated from national administrative databases (hospital information system) and from a systematic literature review for each country. Only direct costs in the national payer's perspective were considered. Probabilistic sensitivity analysis (PSA) and one-way sensitivity analysis (OSA) were performed to check the robustness of the model assumptions.

Overall, the model estimated an average annual number of patients with ABSSSI equal to around 50,000 in Italy, Spain, and Romania. The introduction of dalbavancin reduced the length of stay of, on average, 3.3 days per ABSSSI patient. From the economic point of view, dalbavancin did not incur any additional cost from the NHS perspective with homogenous results between countries. The PSA and OSA demonstrated the robustness of the results.

The preliminary results highlight that the introduction of dalbavancin could generate a significant reduction in term of length of stay with no incremental cost from the NHS perspective. This model could represent a good tool for policymakers to provide information on the early discharge approach in the ABSSSI management.