Can the Roman Catholic Church be considered an apostasy?

They don't follow the teachings of the Bible or even recognize all of it's Scripture. They have doctrines that are not Words of God or the Bible such as purgatory and claiming that they are the Universal Church of Christ. They say they are for God but with popes and recent popes claiming they are the only way to God or self exalting themselves with power over the Church of Christ is an apostasy: an abandonment of what one has professed and departure from faith in God who alone can rectify a sin, not the pope. What do you think??