*3.6. Statistical Analysis*

For statistical analysis the one way ANOVA was used followed by the post-hoc Bonferroni/Dunn analysis of data.

**Supplementary Materials:** The following are available online, Figures S1–S11: NMR spectra of the polymers, Figure S12: MALDI-TOF MS spectra of the PGACyDArg polymers, Figure S13: Solubility of DOX in the presence of the PGACyDArg polymers.

**Author Contributions:** Conceptualisation, G.V., methodology, N.B. (Noemi Bognanni), F.B., M.V., N.B. (Nadia Bertola), G.V.; formal analysis, N.B. (Noemi Bognanni); investigation, G.V., N.B. (Noemi Bognanni), F.B., N.B. (Nadia Bertola) and M.V.; data curation, G.V., N.B. (Noemi Bognanni), F.B., N.B. (Nadia Bertola) and M.V.; writing—original draft preparation, G.V., N.B. (Noemi Bognanni), F.B., and M.V.; writing—review and editing, G.V., N.B. (Noemi Bognanni), F.B. and M.V.; project administration, G.V., funding acquisition, M.V. and G.V. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Please refer to suggested Data Availability Statements in the section "MDPI Research Data Policies" at https://www.mdpi.com/ethics.

**Acknowledgments:** The authors acknowledge support from Università degli Studi di Catania (Piano di incentivi per la ricerca di Ateneo 2020/2022 (Pia.ce.ri.) and from Italian Ministry of Health (Ricerca Corrente).

**Conflicts of Interest:** The authors declare no conflict of interest.
