Differences Between Intravenous and Subcutaneous Modes of Administration in Oncology from the Patient, Healthcare Provider, and Healthcare System Perspectives: A Systematic Review

Background

While patients with cancer have traditionally received oncology treatments through intravenous (IV) administration, some therapies are becoming available via alternative modes of administration, such as subcutaneous (SC). This study aimed to evaluate IV versus SC therapy administration from the perspectives of the patient, healthcare provider (HCP), and healthcare system.

Methods

A systematic review was conducted, searching MEDLINE and Embase databases from 2000 to 2022. This was supplemented with grey literature searches of additional sources such as conference proceedings. Observational studies and clinical trials were included if they assessed adult patients with any cancer type who were treated with pharmacologic therapies administered via IV or SC and included patient- or HCP-reported outcomes or healthcare system perspectives on the mode of administration. Records identified by the literature search were screened by two independent reviewers. Included studies were data extracted by a single reviewer and validated by a second reviewer and synthesized using a narrative approach.

Results

After screening, 33 unique studies were included in the systematic review. Patients and HCPs reported substantially more favorable preference rates for SC over IV treatment. Additionally, from the patient perspective there were reductions in treatment time and economic burden for SC compared with IV therapy. From the HCP’s perspective, treatment time was consistently reduced by SC compared with IV treatment administration. Although information on the impact of SC and IV treatments for oncology on healthcare systems was limited, the use of SC formulations showed consistent cost savings (direct costs) and time savings from this perspective considering various uptake scenarios compared with IV administration.

Conclusion

Compared with IV administration, SC oncology treatment is a preferred option by patients and HCPs, increasing optionality and reducing treatment time while simultaneously increasing capacity and reducing the financial burden on healthcare systems.