A novel compound heterozygous NBAS variant with HLH and multisystem involvement: expanding the clinical spectrum and literature review - Takeaways - MDSpire

A novel compound heterozygous NBAS variant with HLH and multisystem involvement: expanding the clinical spectrum and literature review

  • By

  • Xiaozhen Gong

  • Ye Feng

  • Qianlu Zhang

  • Lin Tong

  • Zijuan Feng

  • Xiaodong Zhao

  • Lina Zhou

  • Ying Dou

  • June 1, 2026

  • 0 min

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  • 1

    Biallelic variants in the NBAS gene are linked to various syndromes, including SOPH syndrome and ILFS-2, with diverse clinical manifestations.

  • 2

    A novel compound heterozygous variant in the NBAS gene was identified in a patient with HLH, short stature, and recurrent infections.

  • 3

    The c.5139-5T>G variant caused aberrant splicing, while the c.5983C>T variant was classified as likely pathogenic according to ACMG guidelines.

  • 4

    Functional studies indicated impaired NBAS function due to a truncated protein resulting from the c.5983C>T variant.

  • 5

    The study highlights the potential for HLH as a severe complication in NBAS deficiency, emphasizing the need for early recognition.

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