An inherited metabolic disease that is has its basis in the disruption of aspartate family amino acid metabolic process. The disease is inborn disorder of aspartate family metabolism (MONDO_0037938, a Monarch Disease Ontology entry). Also known as: inborn aspartate family amino acid metabolic process disorder, inborn error of aspartate family amino acid metabolic process, rare inborn error of aspartate family amino acid metabolic process.