| CASE REPORT |
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| Year : 2013 | Volume
: 19
| Issue : 4 | Page : 483-486 |
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An incidental case of dihydropyrimidine dehydrogenase deficiency: One case, multiple challenges
Hamoud H Al Khallaf1, Miao He1, Angela Wittenauer2, Elizabeth E Woolley3, Mariagrazia Cunto2, Muhammad Ali Pervaiz4
1 Department of Human Genetics; Department of Biochemical Genetics; Emory Genetics Laboratory, Emory University, Atlanta, Georgia, USA
2 Department of Human Genetics, Emory University, Atlanta, Georgia, USA
3 Department of Human Genetics; Emory Genetics Laboratory, Emory University, Atlanta, Georgia, USA
4 Department of Hospital Medicine, WellStar Health System, Douglasville, Georgia; Genomic Medicine Consultants, Decatur, GA, USA
Correspondence Address:
Muhammad Ali Pervaiz
WellStar Health System, 8954 Hospital Drive, Douglasville, Georgia 30134
USA
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/0971-6866.124382
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Dihydropyrimidine dehydrogenase (DPD) deficiency is an autosomal recessive disorder that shows large phenotypical variability, ranging from no symptoms to intellectual disability, motor retardation, and convulsions. In addition, homozygous and heterozygous mutation carriers can develop severe 5-fluorouracil (5-FU) toxicity. The lack of genotype-phenotype correlation and the possibility of other factors playing a role in the manifestation of the neurological abnormalities, make the management and education of asymptomatic DPD individuals more challenging. We describe a 3-month-old baby who was incidentally found by urine organic acid testing (done as part of positive newborn screen) to have very high level of thymine and uracil, consistent with DPD deficiency. Since the prevalence of asymptomatic DPD deficiency in the general population is fairly significant (1 in 10,000), we emphasize in this case study the importance of developing a guideline in genetic counseling and patient education for this condition as well as other incidental laboratory findings. |
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