Changes in renal, bone, lipid, and inflammation markers in HIV-1 patients after combination antiretroviral therapy simplification to dolutegravir monotherapy

Comparison of Renal Function Biomarkers of Serum Creatinine and Cystatin C in HIV-Infected People on Dolutegravir-Containing Therapy

Objective(s)

HIV-1-infected Chinese patients who were treated naïve with combination dolutegravir (DTG) and tenofovir disoproxil fumarate (TDF) group, DTG without TDF group, TDF without DTG, as well as patients switched to DTG-containing therapy from other drugs were included.

Design

The dynamics of serum creatinine, cystatin C (CysC) level, eGFR_cr and eGFR_CysC at the baseline, 4 w, 12w, 24w, 36w and 48w for different group of patients were collected and evaluated.

Methods

Changes in serum creatinine, levels, eGFR_cr and eGFR_CysC were analyzed among groups and in different time-points. Intra-group correlation coefficient and Bland–Altman plot were used to compare the results of eGFR_cr and eGFR_CysC.

Results

Thirty-seven treated-naïve HIV-patients in combined DTG and TDF group (group 1), 23 in DTG without TDF patients (group 2) and 47 patients on TDF without DTG group (control group, group 3) along with 31 patients whose ART switch to DTG-containing regimens (group 4) were collected. Serum creatinine was significantly elevated in the group 1 and group 2 instead of group 3 from baseline to 48w. Mean decreased change of eGFR calculated by serum creatinine proved the same conclusion. However, there were no differences in serum cystatin C and eGFR_CysC between baseline and at 48 weeks in DTG-containing groups. Moreover, the proportion of eGFRcr decreased over 30% was significantly higher in DTG-treatment group.

Conclusion

We demonstrated the clinical benefits of CysC for assessing the glomerular filtration rate when evaluating renal function in HIV-1-infected patients treated with whether DTG combined with TDF or not.

Bone Safety of Dolutegravir-Containing Regimens in People Living with HIV: Results from a Real-World Cohort

Objective

Few data exist about the effect of dolutegravir (DTG) on bone mineral density (BMD) in real life. The aim of this study was to determine rates of change in BMD over time in people living with HIV (PLWH) treated with DTG.

Design

The SCOLTA project is a multicenter observational study enrolling HIV-infected people who start newly commercialized drugs prospectively, with the aim of identifying toxicities and adverse events (AE) in a real-life setting.

Methods

Dual-energy X-ray absorptiometry at the femoral neck (FN) and lumbar spine (LS) was performed at study entry (baseline, BL) and after 96 weeks. Percentage BMD change from BL was evaluated using a general linear model, including factors potentially associated with bone loss.

Results

One hundred and sixty PLWH were enrolled (26.3% female, mean age 49.9 ± 11.2 years) from April 2015 to April 2017. Overall, we could calculate BMD change from baseline, for at least one site, in 133 subjects (83.1%). After a median of 102 weeks (IQR: 90–110), mean FN BMD increased, but not significantly, whereas LS BMD showed a significant mean increase of 13.1 (95% confidence interval, CI: 1.7–24.6) mg/cm³ (+1.6%, 95% CI: 0.3%, 2.8%) after a median time of 102 weeks (IQR: 84–110). As regards LS BMD, patients with osteopenia/osteoporosis at study entry experienced a high increase from baseline (20.6, 95% CI: 3.1, 38.1 mg/cm³), as well as experienced subjects (16.9, 95% CI: 4.7, 29.2 mg/cm³) and those on vitamin D supplementation (26.8, 95% CI: 7.7, 45.9 mg/cm³).

Conclusion

Dolutegravir-containing regimens could reduce the negative impact of antiretroviral therapy on bone, especially in patients with low BMD.