Many specific examples of agenesis are referred to by individual names, depending on the organ affected.
- Agenesis of the corpus callosum- failure of the Corpus callosum to develop.
- Renal agenesis- failure of one or both of the kidneys to develop.
- Phocomelia- failure of the arms or legs to develop, often caused by the drug thalidomide.
- Penile agenesis- failure of penis to develop.
In theology and origins science, agenesis means to have no beginning or to have no creator. To come into existence without the influence of an outside intelligence. Template:Disease-stub