Prevalence of a loss-of-function mutation in the proton-coupled folate transporter gene (PCFT-SLC46A1) causing hereditary folate malabsorption in Puerto Rico

Kris M. Mahadeo, Ndeye Diop-Bove, Sonia I. Ramirez, Carmen L. Cadilla, Enid Rivera, Madelena Martin, Norma B. Lerner, Lisa Diantonio, Salvatore Duva, Pedro J. Santiago-Borrero, I. David Goldman

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Objective: To determine whether subjects of Puerto Rican heritage are at increased risk for a specific mutation of the proton-coupled folate transporter (PCFT) causing hereditary folate malabsorption (HFM). Study design: Three percent of the births in Puerto Rico in 2005, with additional regional oversampling, were screened for the prevalence of the c.1082G>A; p.Y362-G389 del PCFT gene mutation. Six new subjects of Puerto Rican heritage with the clinical diagnosis of HFM were also assessed for this mutation. Results: Six subjects of Puerto Rican heritage with the clinical diagnosis of HFM were all homozygous for the c.1082G>A; p.Y362-G389 del PCFT mutation. Three heterozygote carriers were identified from the 1582 newborn samples randomly selected from births in Puerto Rico in 2005. The carrier frequency for the mutated allele was 0.2% island-wide and 6.3% in Villalba. Conclusion: These findings are consistent with a common mutation in the PCFT gene causing HFM that has disseminated to Puerto Ricans who have migrated to mainland United States. Because prompt diagnosis and treatment of infants with HFM can prevent the consequences of this disorder, newborn screening should be considered in high-risk populations and physicians should be aware of its prevalence in infants of Puerto Rican ancestry.

Original languageEnglish (US)
JournalJournal of Pediatrics
Volume159
Issue number4
DOIs
StatePublished - Oct 1 2011
Externally publishedYes

Fingerprint

Proton-Coupled Folate Transporter
Puerto Rico
Mutation
Genes
Hispanic Americans
Parturition
Newborn Infant
Heterozygote
Islands
Gene Frequency
Hereditary Folate Malabsorption
Physicians
Population

Keywords

  • Hereditary folate malabsorption
  • HFM
  • PCFT
  • PCR
  • Polymerase chain reaction
  • Proton-Coupled Folate Transporter

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

Cite this

Prevalence of a loss-of-function mutation in the proton-coupled folate transporter gene (PCFT-SLC46A1) causing hereditary folate malabsorption in Puerto Rico. / Mahadeo, Kris M.; Diop-Bove, Ndeye; Ramirez, Sonia I.; Cadilla, Carmen L.; Rivera, Enid; Martin, Madelena; Lerner, Norma B.; Diantonio, Lisa; Duva, Salvatore; Santiago-Borrero, Pedro J.; Goldman, I. David.

In: Journal of Pediatrics, Vol. 159, No. 4, 01.10.2011.

Research output: Contribution to journalArticle

Mahadeo, KM, Diop-Bove, N, Ramirez, SI, Cadilla, CL, Rivera, E, Martin, M, Lerner, NB, Diantonio, L, Duva, S, Santiago-Borrero, PJ & Goldman, ID 2011, 'Prevalence of a loss-of-function mutation in the proton-coupled folate transporter gene (PCFT-SLC46A1) causing hereditary folate malabsorption in Puerto Rico', Journal of Pediatrics, vol. 159, no. 4. https://doi.org/10.1016/j.jpeds.2011.03.005
Mahadeo, Kris M. ; Diop-Bove, Ndeye ; Ramirez, Sonia I. ; Cadilla, Carmen L. ; Rivera, Enid ; Martin, Madelena ; Lerner, Norma B. ; Diantonio, Lisa ; Duva, Salvatore ; Santiago-Borrero, Pedro J. ; Goldman, I. David. / Prevalence of a loss-of-function mutation in the proton-coupled folate transporter gene (PCFT-SLC46A1) causing hereditary folate malabsorption in Puerto Rico. In: Journal of Pediatrics. 2011 ; Vol. 159, No. 4.
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abstract = "Objective: To determine whether subjects of Puerto Rican heritage are at increased risk for a specific mutation of the proton-coupled folate transporter (PCFT) causing hereditary folate malabsorption (HFM). Study design: Three percent of the births in Puerto Rico in 2005, with additional regional oversampling, were screened for the prevalence of the c.1082G>A; p.Y362-G389 del PCFT gene mutation. Six new subjects of Puerto Rican heritage with the clinical diagnosis of HFM were also assessed for this mutation. Results: Six subjects of Puerto Rican heritage with the clinical diagnosis of HFM were all homozygous for the c.1082G>A; p.Y362-G389 del PCFT mutation. Three heterozygote carriers were identified from the 1582 newborn samples randomly selected from births in Puerto Rico in 2005. The carrier frequency for the mutated allele was 0.2{\%} island-wide and 6.3{\%} in Villalba. Conclusion: These findings are consistent with a common mutation in the PCFT gene causing HFM that has disseminated to Puerto Ricans who have migrated to mainland United States. Because prompt diagnosis and treatment of infants with HFM can prevent the consequences of this disorder, newborn screening should be considered in high-risk populations and physicians should be aware of its prevalence in infants of Puerto Rican ancestry.",
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