A U wave as seen on ECG. An electrocardiogram of an 18-year-old man showing U waves, most evident in lead V3. The U wave is a wave on an electrocardiogram that is not always seen. It is typically small, and, by definition, follows the T wave. U waves are thought to represent repolarization of the papillary muscles or Purkinje fibers.
HCP is caused by mutations in the CPOX gene, which codes for the enzyme coproporphyrinogen oxidase. This enzyme is responsible for the sixth step in the heme biosynthetic pathway, converting coproporphyrinogen III to protoporphyrinogen IX.
New genetic cause of osteoporosis found, rare gene identified. By: Bel Marra Health | Osteoporosis | Tuesday, September 15, 2015 - 17:30 PM. A rare gene â the EN1 gene â has been identified as a potential osteoporosis cause by researchers at McGill University.With the use of extensive genetic data from the UK10K project, the research team uncovered that a variant of the EN1 gene has a large effect on bone mineral density (BMD).ew genetic cause of osteoporosis found, rare gene identified. By: Bel Marra Health | Osteoporosis | Tuesday, September 15, 2015 - 17:30 PM. A rare gene â the EN1 gene â has been identified as a potential osteoporosis cause by researchers at McGill University.