  A variant of a semigroup $S$ with respect to an element $a\in S$ is the
semigroup $S^{a}=(S,\star_{a})$, where $x\star_{a}y=xay$ for any $x,y\in S$.
Here, $a$ is the sandwich element of $S^{a}$. In this article, we study
variants of the partial Brauer monoid $\mathcal{PB}_{n}$ for $n\in\mathbb{N}$.
We give the classification of these variants in the case when the rank of the
sandwich element is nonzero.
