Latex, PT Sans, не включается курсив

\documentclass[oneside]{book}
%\usepackage[utf8]{inputenc}
\usepackage[T2A]{fontenc}
\usepackage[russian]{babel}
\usepackage{paratype}


\usepackage{fontspec}
\usepackage{titlesec}
%\usepackage{PT Sans}
\defaultfontfeatures{Ligatures=TeX}
\setmainfont{PT Sans}


\setsansfont{PT Sans}


\newcounter{imgNum}
\setcounter{imgNum}{0}


\pagestyle{plain}
\textwidth=165mm
\oddsidemargin=0cm
\textheight=650pt
\voffset=-10.2mm
\begin{document}


{\scshape abc}


\textit{abc}


\end{document}