Sumi S, Ishikawa T, Ito Y, Oishi H, Asai K, Wada Y
Department of Pediatrics, Nagoya City University Medical School.
Tohoku J Exp Med. 1990 Jan;160(1):93-4. doi: 10.1620/tjem.160.93.
We report the dihydropteridine reductase (DHPR) activity in cases with interstitial deletion of the short arm of chromosome 4. Case 1 with the segment 4p15.32-4p16 deleted has normal DHPR activity. Case 2 with 4p15.2-4p15.32 deleted has reduced DHPR activity, less than 50% of normal.