Re-entry of tumour B cells into the cycle of somatic mutation and isotype switching in follicular lymphoma

Satoshi Shiokawa, Takamitsu Matsushima, Ilseung Choi, Yasunobu Abe, Motoaki Shiratsuchi, Youko Suehiro, Koichiro Muta, Koichi Ohshima, Junji Nishimura

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Abstract

Sequencing of the immunoglobulin (Ig) gene transcripts of the tumour B cells in lymph node (LN) and bone marrow (BM) from a follicular lymphoma (FL) patient associated with multiple myeloma identified two dominant clones. One of the clones, present in both LN and BM, had somatic mutations and extensive clonal diversity. Among the diversified clones, two dominant populations of identical sequences (group I and II) were present. Group II was a descendant population of group I and had nine more somatic mutations. Group I contained μ-, δ-, γ- and α-expressing clones. Group II clones contained mainly μ- and δ-expressing clones. These findings showed that somatic mutation and isotype switching occurred repeatedly in this patient.

Original languageEnglish
Pages (from-to)492-495
Number of pages4
JournalBritish Journal of Haematology
Volume120
Issue number3
DOIs
Publication statusPublished - Feb 1 2003

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All Science Journal Classification (ASJC) codes

  • Hematology

Cite this

Shiokawa, S., Matsushima, T., Choi, I., Abe, Y., Shiratsuchi, M., Suehiro, Y., ... Nishimura, J. (2003). Re-entry of tumour B cells into the cycle of somatic mutation and isotype switching in follicular lymphoma. British Journal of Haematology, 120(3), 492-495. https://doi.org/10.1046/j.1365-2141.2003.04079.x