  Hard exclusive electroproduction of kaons as well as the kaon-induced
exclusive Drell-Yan process are investigated within the handbag approach which
is based on factorization in hard subprocesses and soft generalized parton
distributions (GPDs). The kaon-hyperon transition GPDs occurring here, are
related to the proton GPDs by flavor symmetry. The latter ones are taken from
analyses of pion electroproduction. Like in hard processes involving pions the
transversity GPDs play an important role in the processes of interest - the
transverse cross sections are larger than (or, for the Drell-Yan process, about
equal to) the longitudinal ones. The evolution of the transversity GPDs is
taken into account for the first time but, as the analysis reveals, it is a
minor effect in the range of photon virtualities of interest. The predictions
for the cross sections agree fairly well with the sparse available
electroproduction data.
