All Indoeuropean languages are nominative languages.
That means that they use a special case called nominative as marker of the subject both in transitive and intransitive sentences. None of the other cases shows gender markers. If you are interested in further questions concerning case and gender look at the page referring to nouns . Nevertheless it has often been maintained that an early stage of Proto-Indoeuropean was an ergative language, although there is no Indoeuropean language of this type. Well-known ergative languages are the Basque and the Georgian languages for example.