Two McLeod patients with novel mutations in XK

Patrycja M. Dubielecka, Nelson Hwynn, Cenk Sengun, Soohee Lee, Christine Lomas-Francis, Carlos Singer, Hubert H. Fernandez, Ruth H. Walker

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


McLeod syndrome (MLS) is a rare, X-linked, late-onset, disease involving hematological, brain, and neuromuscular systems, caused by mutations in XK that result in either defective XK or complete loss of XK protein. Acanthocytosis of erythrocytes is a typical feature. We report novel mutations in two patients who exhibited typical clinical characteristics of MLS. The coding and flanking intronic regions of XK were amplified by PCR, sequenced, and compared with the normal XK sequence. XK protein, and its complexed partner protein, Kell, were assessed by Western blot analysis. Patient 1 was found to have a single base insertion, 605insA at 175Ile creating a frame shift within the coding sequence of XK. Patient 2 had a single base substitution in the 3′ splice sequence of intron 2 (IVS2-2a>g). In both cases mutations resulted in the absence of XK protein.

Original languageEnglish (US)
Pages (from-to)160-164
Number of pages5
JournalJournal of the Neurological Sciences
Issue number1-2
StatePublished - Jun 15 2011


  • Acanthocytosis
  • Kell blood group antigens
  • Kell protein
  • Kx erythrocyte antigen
  • McLeod blood group
  • McLeod syndrome
  • Neuroacanthocytosis
  • XK protein

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology


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