トランスクリプションと遺伝子プロファイリングを通して,機能的な高リスク骨髄腫の概念に挑戦
Sina Alexandra Beer1, David A Cairns2, Charlotte Pawlyn3
1Division of Genetics and Epidemiology, The Institute of Cancer Research, Sutton, United Kingdom.
Blood
|August 20, 2025
まとめ
機能性高リスク多発性骨髄腫 (FHR MM) は,標準的な検査で見逃されることが多い. 診断時の包括的なゲノムと細胞遺伝子のプロファイリングは,早期再発のリスクのある患者をより良く特定することができます.
科学分野:
- 血液学
- 腫瘍学
- 遺伝学
背景:
- 予期せぬ早期再発 (ER) と表される高リスク機能性多発性骨髄腫 (FHR) は,ベースラインリスク因子がないにもかかわらず,
- FHR MMの正確な特定は,初期診断評価と後の治療の包括性に大きく依存しています.
研究 の 目的:
- FHR MMの真の発生率を決定する.
- FHR MMの患者の特定と結果の予測における結合細胞遺伝学と遺伝子発現プロファイルの有効性を評価する.
主な方法:
- イギリスのNCRI Myeloma- XI試験の均等に治療された移植対象患者の分析.
- 国際骨髄腫学会/国際骨髄腫ワーキンググループ (IMS/IMWG) の高リスク細胞遺伝異常 (HRCA) とSKY92遺伝子発現高リスク (GEP- HR) サインについて,患者さんのプロフィールが評価されました.
- 早期再発 (移植後18ヶ月未満) と長期生存率の評価
主要な成果:
- 135人の患者のうち25人 (18. 5%) が早期再発を経験した.
- 初期再発の有意な割合は,組み合わせたプロファイリング (GEP-HRのみまたは単一のHRマーカー) によってのみ特定され,標準的な方法の限界を強調しました.
- IMS/IMWG-HRとGEP-HRの同時発生は,非常に短い全生存率 (HR=13. 1) と関連しており,その次はGEP-HRのみ (HR=5. 1) とIMS/IMWG-HRのみ (HR=3. 2) であった.
結論:
- 標準診断基準はFHRMMの発生率を過小評価する可能性があります.
- IMS/IMWGとGEPの組み合わせによるプロファイリングは,早期再発のリスクのある患者の特定を改善します.
- 多発性骨髄腫の初期リスク分層と個別化治療戦略には,包括的なベースラインプロファイリングが不可欠です.
さらに関連する動画
関連する概念動画
Genetic Screens
4.6K
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
4.6K
Adaptive Mechanisms in Cancer Cells
5.8K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.8K
Loss of Tumor Suppressor Gene Functions
5.0K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
5.0K
Cancer-Critical Genes II: Tumor Suppressor Genes
8.3K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
8.3K


