Pernicious anemia

MONDO:0008228

Megaloblastic anemia caused by vitamin B-12 deficiency due to impaired absorption. The impaired absorption of vitamin B-12 is secondary to atrophic gastritis and loss of gastric parietal cells.

Also known as: Addison anaemia, Addison anemia, Addison's anemia, Addison-Biermer anaemia, Addison-Biermer anemia, Biermer anaemia, Biermer anemia, Biermer disease

21 clinical trials for this condition and its sub-types, 1 tagged with Pernicious anemia itself.

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Where it sits in the disease tree

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Part of

↑ Hereditary disease (18235) ↑ Nutritional deficiency disease (512) ↑ Megaloblastic anemia (9)

Including sub-types (21) Tagged with Pernicious anemia (1)

Not yet finished but already full! 1

Newborn screening study aims to catch rare diseases at birth

Diagnosis Ongoing

This study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…

Sponsor: RTI International • Aim: Diagnosis

Last updated Jul 03, 2026 00:00 UTC

Pernicious anemia

Where it sits in the disease tree

Newborn screening study aims to catch rare diseases at birth