<p>The invention relates to a method for the in vitro diagnosis or prognosis of testicular cancer in a biological sample taken from a patient suspected of suffering from testicular cancer and includes a step of detecting the presence or absence of CpG dinucleotide methylation in at least one genomic DNA target sequence of the sample, the target sequence being selected from at least one of the identified sequences in SEQ ID nos. 1 through 7, or from at least one sequence being at least 99% identical to one of the identified sequences in SEQ ID nos. 1 through 7 and the complementary sequences thereof. The invention further relates to the DNA sequences and to the use thereof as a testicular cancer marker.</p>
