What been neglected?

What have been neglected by autoimmunologists? Genes? Or immunodeficiencies?

Context:

features of certain of the disorders discussed at the meeting forced a reappraisal of what actually is meant by ‘autoimmune disease’. It was concluded that genes that determine inherited immunodeficiencies, hitherto rather neglected by autoimmunologists, compel attention to consideration of molecular genetic anomalies critical for emergence of autoimmune disease in humans and animals.