Format

Send to

Choose Destination
See comment in PubMed Commons below
Ann Hematol. 2002 Jan;81(1):16-9. Epub 2001 Dec 8.

Menatetrenone, a vitamin K2 analog, ameliorates cytopenia in patients with refractory anemia of myelodysplastic syndrome.

Author information

  • 1Third Department of Medicine, Kanazawa University School of Medicine, 13-1 Takaramachi, Kanazawa 920-8641, Japan. takami@med3.m.kanazawa-u.ac.jp

Abstract

Vitamin K2 induces differentiation of leukemic cell lines and apoptosis of immature blasts in myelodysplastic syndrome (MDS). We recently reported a case of MDS-refractory anemia (MDS-RA) with trilineage hematologic response to oral administration of menatetrenone, a vitamin K2 analog. To determine a possible role of this agent in treatment of MDS-RA, we conducted a prospective randomized trial assessing the safety and efficacy of menatetrenone. A total of 18 consecutive patients newly diagnosed with MDS-RA were randomized to receive either 45 mg of oral menatetrenone (group 1) or no menatetrenone (group 2). Administration of menatetrenone was well tolerated. Of the nine patients in group 1 (56%), five improved with menatetrenone treatment while only one (11%) of the group 2 patients improved. Three patients (33%) showed a major response in absolute neutrophil count (ANC), two (22%) showed a major response in hemoglobin concentration, and two of the nine (22%) showed a major response in platelet count. The ANC of group 1 patients rose after treatment, while that of group 2 patients decreased slightly at follow-up after 16 weeks ( p=0.03). Significant improvement was also seen in final platelet count ( p=0.01), but not in hemoglobin concentration. Given the absence of toxicity, menatetrenone can be recommended for all patients with MDS-RA.

PMID:
11807630
DOI:
10.1007/s00277-001-0391-x
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Springer
    Loading ...
    Support Center