Pediatric Patients 2 Years and Older with HIV-1 Infection

The safety and effectiveness of tenofovir disoproxil fumarate in pediatric patients 2 years to less than 18 years of age is supported by data from two randomized trials. Trial 352 was a randomized controlled trial in 92 HIV-1 treatment experienced subjects 2 years to less than 12 years of age who were virologically suppressed on a stavudine- or zidovudine-containing regimen and were randomized to either switch to a tenofovir disoproxil fumarate-containing regimen (N=44) or stay on their original regimen (N=48) for 48 weeks. At Week 48, 89% of subjects in the tenofovir disoproxil fumarate treatment group and 90% of subjects in the d4T or AZT treatment group had HIV-1 RNA concentrations <400 copies/mL. Trial 321 was a placebo-controlled trial in 87 HIV-1 treatment experienced subjects 12 years to less than 18 years of age who were treated with tenofovir disoproxil fumarate (N=45) or placebo (N=42) in combination with an optimized background regimen for 48 weeks. Overall, the trial failed to show a difference in virologic response between the tenofovir disoproxil fumarate and placebo groups. Subgroup analyses suggest the lack of difference in virologic response may be attributable to imbalances between treatment arms in baseline viral susceptibility to tenofovir disoproxil fumarate and OBR [see Adverse Reactions (6.1) and Clinical Studies (14.3)].

Although changes in HIV-1 RNA in these highly treatment-experienced subjects in Trial 321 were less than anticipated, the pharmacokinetic profile of tenofovir in patients 2 years to less than 18 years of age at the recommended doses was similar to that found to be safe and effective in adult clinical trials [see Clinical Pharmacology (12.3)]. 

The effects of tenofovir disoproxil fumarate-associated changes in BMD and biochemical markers on long-term bone health and future fracture risk in HIV-1 pediatric patients 2 years and older are unknown. The long-term effect of lower spine and total body BMD on skeletal growth in pediatric patients 2 years and older, and in particular, the effects of long-duration exposure in younger children is unknown [see Warnings and Precautions (5.5), Adverse Reactions (6.1)]. 

Safety and effectiveness of tenofovir disoproxil fumarate in pediatric patients younger than 2 years of age and weighing less than 10 kg with HIV-1 infection have not been established.

Pediatric Patients 12 Years of Age and Older with Chronic Hepatitis B

The safety and effectiveness of tenofovir disoproxil fumarate in pediatric patients 12 years to less than 18 years of age is supported by data from one randomized trial (Trial 115) in which tenofovir disoproxil fumarate was administered to HBV-infected treatment-experienced subjects. 

In Trial 115, 106 HBeAg negative (9%) and positive (91%) subjects 12 years to less than 18 years of age with chronic HBV infection were randomized to receive blinded treatment with tenofovir disoproxil fumarate or placebo for 72 weeks. At Week 72, 88% of subjects in the tenofovir disoproxil fumarate group and 0% of subjects in the placebo group had HBV DNA <400 copies/mL (69 IU/mL). The effects of tenofovir disoproxil fumarate-associated changes in BMD and biochemical markers on long-term bone health and future fracture risk in chronic HBV-infected pediatric patients 2 years and older are unknown. The long-term effect of lower spine and total body BMD on skeletal growth in pediatric patients 2 years and older, and in particular, the effects of long-duration exposure in younger children is unknown [see Warnings and Precautions (5.5), Adverse Reactions (6.1)]. 

Safety and effectiveness of tenofovir disoproxil fumarate in chronic HBV-infected pediatric patients younger than 2 years of age and weighing less than 10 kg have not been established. 

Pediatric use information is approved for Gilead Sciences, Inc.'s VIREAD® (tenofovir disoproxil fumarate) tablets. However, due to Gilead Sciences, Inc.'s marketing exclusivity rights, this drug product is not labeled with that pediatric information.