A transdiagnostic niacin flushing biomarker with disorder-specific multivariate relationships in adolescent unipolar and bipolar depression - Summary - MDSpire
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A Biomarker for Niacin-Induced Flushing Exhibiting Disorder-Specific Multivariate Associations in Adolescent Unipolar and Bipolar Depression

  • By

  • Mengyao Feng

  • Jinxin He

  • Qi Wen

  • Jie Yao

  • Yuting Zeng

  • Yupan Tan

  • Hongjie Li

  • Yigang Wang

  • Guanghai Wang

  • Li Dong

  • Xia Sun

  • Yuanyuan Zhang

  • Shuxian Yin

  • Huan Peng

  • Maolin Hu

  • Xiaofen Zong

  • January 12, 2026

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Objective:

To investigate the niacin skin flushing response (NSFR) as a transdiagnostic biomarker in adolescents with unipolar depression (UD) and bipolar disorder (BD), emphasizing the significance of exploring disorder-specific multivariate relationships between NSFR features and clinical behavior.

Key Findings:
  • Both UD and BD patients exhibited similar attenuation and delay of NSFR, indicating a shared physiological response.
  • NSFR features effectively distinguished patients from healthy controls, suggesting potential diagnostic utility.
  • Disorder-specific multivariate relationships between NSFR features and clinical behavior were identified, highlighting the need for tailored interventions.
Interpretation:

The findings suggest that blunted NSFR serves as a transdiagnostic biomarker for both UD and BD, with distinct relationships between NSFR features and clinical symptoms that warrant further exploration for clinical relevance.

Limitations:
  • The study's sample was limited to adolescents, which may not generalize to adults, potentially affecting the applicability of findings.
  • Potential confounding factors related to hormonal differences in adolescents were not fully explored, which could influence NSFR outcomes.
Conclusion:

The study supports the utility of NSFR as a biomarker in adolescent mood disorders and highlights the critical need for further research to understand the distinct clinical presentations stemming from shared biological abnormalities.

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