title: Changes in the human immunodeficiency virus p7-p1-p6 gag gene in drug-naive and pretreated patients.
abstract: Resistance to antiretroviral agents often results from mutations within the human immunodeficiency virus (HIV) pol gene. Moreover, insertions within the p6 gag-pol region have recently been found to be involved with resistance to nucleoside analogs. Overall, we found that 21% of 156 specimens collected from HIV-infected individuals (17.6% from 74 drug-naive patients and 24.4% from 82 pretreated patients) harbored these insertions. Insertions around the KQE (Lys-Gln-Glu) motif were found in 12.2% of the pretreated patients but in none of the drug-naive subjects (P = 0.002). In contrast, insertions around the PTAP (Prol-Thre-Ala-Prol) motif were seen at similar rates ( approximately 15%) among drug-naive and pretreated patients, which supports the idea that they may be natural polymorphisms.
authors.affiliation: Service of Infectious Diseases, Hospital Carlos III, Instituto de Salud Carlos III, Madrid, Spain.
authors.forename: Oscar
authors.initials: O
authors.lastname: Gallego
authors.forename: Carmen
authors.initials: C
authors.lastname: de Mendoza
authors.forename: Angélica
authors.initials: A
authors.lastname: Corral
authors.forename: Vincent
authors.initials: V
authors.lastname: Soriano
mesh_terms: D019380:Anti-HIV Agents / Q000494:pharmacology; D024882:Drug Resistance, Viral / Q000235:genetics; D015683:Gene Products, gag / Q000235:genetics*; D006678:HIV / Q000187:drug effects / Q000235:genetics*; D006801:Humans; D009154:Mutation; D011110:Polymorphism, Genetic; D054301:gag Gene Products, Human Immunodeficiency Virus
chemical_list: D019380:Anti-HIV Agents; D015683:Gene Products, gag; D054301:gag Gene Products, Human Immunodeficiency Virus; C083868:gag protein p1, Human immunodeficiency virus; C083002:p6 gag protein, Human immunodeficiency virus 1