First-of-Its-Kind Molecular Karyotyping Test Assists Hematologists in Diagnosing Leukemia

Leukemias are a group of life threatening malignant disorders of the blood and bone marrow, which can occur at any age. There are a total of ~ 4.4 million new cases of and ~ 3.1 million deaths from leukemia worldwide annually. Genomic alternations, especially copy number aberrations (CNAs), are particularly imperative for diagnostic classification and risk stratification in leukemia patients. The conventional cytogenetic analysis, karyotyping, has been used to detect the genetic alterations of the hematopoietic malignancies for decades. Although karyotyping can provide a panoramic view of chromosomal aberrations, this technique comes with several drawbacks, such as a time-consuming and prone-to-failure cell-culturing step, relatively low resolution which is usually unable to detect submicroscopic changes (< 10 Mb), and a visual interpretation that is highly dependent on cytogeneticist experience and knowledge of the disease. Now, a new test kit can evaluate the CNA in bone marrow cells and/or circulating cell-free DNA (cfDNA) via shallow whole-genome sequencing (sWGS), in combination with conventional cytogenetics technologies, to make leukemia diagnosis, molecular subtyping, prognostic stratification and treatment response monitoring more precise and comprehensive.

SeekIn Inc. (Shenzhen, China) has developed the LeukoPrint Molecular Karyotyping Kit which can help hematologists make diagnosis and prognostic stratification according to European Leukemia Net (ELN), Revised International Prognostic Scoring System (IPSS-R) or Revised International Staging System (R-ISS) guidelines. Except for leukemias, LeukoPrint is also applicable to other types of hematological malignancies such as multiple myeloma. The significant advantage of LeukoPrint is high accuracy, high sensitivity, and patients can avoid the pain of frequent sampling from bone marrow. SeekIn has received the CE (Conformité Européenne) Mark for LeukoPrint Molecular Karyotyping Kit and is now ready to launch the test in the European markets.

"With the advent of new DNA sequencing technologies, next-generation sequencing (NGS) based genetic testing has been implemented as a routine protocol for cancer diagnosis, risk stratification, and treatment response evaluation," said Mao Mao, M.D., Ph.D., SeekIn's founder and CEO. "LeukoPrint provides a cost-effective and simplified method for prompt and accurate CNA profiling in leukemia patients. It utilizes a standardized protocol which can be readily extended to clinical laboratories worldwide. With the advantage of detecting CNAs of short DNA fragments, by incorporating with the routine diagnostic methods, LeukoPrint can benefit the conventional cytogenetics by improving diagnostic yield. CE Marking represents a significant milestone for SeekIn in bringing LeukoPrint test to the patients and healthcare providers in Europe. We will continue our efforts to meet additional regulatory requirements in Europe, and to obtain regulatory approvals in the other territories such as China."

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