Subjective Clinical Lipoatrophy Assessment Correlates with DEXA-Measured Limb Fat

Abstract

Objectives: Although physician- and patient-rated diagnoses of lipoatrophy are currently used as a basis for inclusion into clinical trials, few studies have compared physician- or patient-rated lipoatrophy severity with objective measures. We aim to assess the validity of physician- and patient-rated diagnoses of lipoatrophy by evaluating the correlation between clinical assessments of lipoatrophy and objective fat indices. Methods: This cross-sectional study evaluated the association between clinical lipoatrophy scores and DEXA-measured limb fat (n = 154) and subcutaneous fat mitochondrial DNA (mtDNA) levels (n = 80) in HIV+ individuals. Results: There was a signifi cant negative correlation between DEXA-measured limb fat and lipoatrophy scores generated by either the patients (r = –0.27, p = .008) or the physician (r = –0.48, p < .0001). Also, a signifi cant positive correlation was found between the patient-generated lipoatrophy score and the physician score (r = 0.68, p < .0001). However, there was no correlation between fat mtDNA levels and DEXA-measured limb fat (r = –0.09, p = .42) or between physician- or patient-generated lipoatrophy scores (r = –0.09, p = .43, and r = 0.04, p = .71, respectively). Conclusion: These results suggest that physician- and patient-rated lipoatrophy scores may be useful surrogates for more expensive measures of lipoatrophy, which could be reserved for research studies.

Keywords:

• DEXA
• lipoatrophy
• lipodystrophy