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Serum lactate dehydrogenase isoenzyme 1 and relapse in patients with nonseminomatous testicular germ cell tumors clinical stage I.

Abstract
Serum lactate dehydrogenase isoenzyme 1 catalytic concentration (S-LD-1) was measured at the time of orchiectomy in 104 patients with nonseminomatous testicular germ cell tumors (NSTGCT) clinical stage I who participated in a randomized study comparing surveillance after orchiectomy (group I) and radiotherapy (group II). For 68 patients, S-LD-1 was measured in a serum sample before or on the day of the orchiectomy. Twenty-seven patients (40%) had elevated S-LD-1; median 102 U/L (range 41-335). For the remaining 36 patients. S-LD-1 was measured in a serum sample after orchiectomy: 8 of these patients (22%) had elevated S-LD-1. S-LD-1 was normalized shortly after surgery in most patients with a preorchiectomy elevated S-LD-1. Fifteen of the 68 patients relapsed: 9 out of 27 with an elevated S-LD-1 and 6 out of 41 patients with normal S-LD-1 (p = 0.13, Fisher's exact test). In group 1, those with a preoperatively elevated S-LD-1 had a lower 8-years' relapse-free survival than those with a normal S-LD-1 (40% vs. 80%, p = 0.003, log-rank test). The role of S-LD-1 in the staging, prognostication and monitoring of patients with NSGCT clinical stage I should be further explored in a large, prospective study.
AuthorsF E von Eyben, E L Madsen, O Blaabjerg, P H Petersen, H von der Maase, G K Jacobsen, M Rørth
JournalActa oncologica (Stockholm, Sweden) (Acta Oncol) Vol. 40 Issue 4 Pg. 536-40 ( 2001) ISSN: 0284-186X [Print] England
PMID11504315 (Publication Type: Clinical Trial, Journal Article, Randomized Controlled Trial)
Chemical References
  • Biomarkers, Tumor
  • Isoenzymes
  • Neoplasm Proteins
  • L-Lactate Dehydrogenase
Topics
  • Adolescent
  • Adult
  • Biomarkers, Tumor (blood)
  • Carcinoma, Embryonal (enzymology, pathology)
  • Combined Modality Therapy
  • Denmark (epidemiology)
  • Disease-Free Survival
  • Endodermal Sinus Tumor (enzymology, pathology)
  • Follow-Up Studies
  • Humans
  • Isoenzymes (blood)
  • L-Lactate Dehydrogenase (blood)
  • Life Tables
  • Male
  • Middle Aged
  • Neoplasm Invasiveness
  • Neoplasm Metastasis
  • Neoplasm Proteins (blood)
  • Neoplasm Recurrence, Local (epidemiology)
  • Neoplasm Staging
  • Orchiectomy
  • Radiotherapy, Adjuvant
  • Teratoma (enzymology, pathology)
  • Testicular Neoplasms (enzymology, pathology)
  • Treatment Outcome

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