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Risk Factors and Biosafety Issues of Gene Therapy Viral Vectors
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This has occurred in <a href="/glossary-of-gene-therapy-terms.html#clinicaltrial">clinical trials</a> for X-linked severe combined immunodeficiency (X-SCID) patients, in which hematopoietic stem cells were transduced with a corrective transgene using a <a href="/glossary-of-gene-therapy-terms.html#retrovirus">retrovirus</a>, and this led to the development of T cell <a href="/glossary-of-gene-therapy-terms.html#leukemia">leukemia</a> in 4 of 20 patients. See reports for <a href="https://www.unifr.ch/nfp37/adverse01.html" target="_blank">first patient</a>, <a href="https://www.unifr.ch/nfp37/adverse02.html" target="_blank">second patient</a> and <a href="https://www.unifr.ch/nfp37/adverse03.html" target="_blank">third patient</a>.</p> <p>In addition, when viruses are used to deliver DNA to cells inside the patient鈥檚 body, there is a slight chance that this DNA could unintentionally be introduced into the patient鈥檚 <a href="/glossary-of-gene-therapy-terms.html#reproductivecells">reproductive cells.</a> If this happens, it could produce changes that may be passed on if a patient has children after treatment. </p> <p>Other concerns include the possibility that transferred genes could be <a href="/glossary-of-gene-therapy-terms.html#geneexpression">overexpressed,</a> producing so much of the missing <a href="/glossary-of-gene-therapy-terms.html#protein">protein</a> as to be harmful; that the viral <a href="/glossary-of-gene-therapy-terms.html#vector">vector</a> could cause an immune reaction; and that the virus could be transmitted from the patient to other individuals or into the environment.</p> <p>However, this basic mode of gene introduction currently shows much promise and doctors and scientists are working hard to fix any potential problems that could exist. They use <a href="/glossary-of-gene-therapy-terms.html#preclinicaltrial">animal testing</a> and other precautions to identify and avoid these risks before any <a href="/glossary-of-gene-therapy-terms.html#clinicaltrial">clinical trials</a> are conducted in humans.</p> <center> <br /> <div class="moduletable "> <div class="mod-banners bannergroup"> <div class="mod-banners__item banneritem"> <a href="/component/banners/click/136.html" target="_blank" rel="noopener noreferrer" title="2ndCellTherAutoimmuneDisease-dec2024"> <img src="https://www.genetherapynet.com/images/banners/2ndCellTherAutoimmuneDisease-dec2024.png#joomlaImage://local-images/banners/2ndCellTherAutoimmuneDisease-dec2024.png?width=468&height=60" alt="2ndCellTherAutoimmuneDisease-dec2024" > </a> </div> </div> </div> </center><br /> <div align="right"><a href="#top"><font size="1">^ Back to Top</font></a></div></div> <div class="uk-margin-top"><a href="/viral-vector/risk-factors.html" class="el-link uk-button uk-button-default">Read more</a></div> </div></div> </div> </div> </div> <div class="uk-width-1-2 uk-width-1-4@m uk-width-1-5@l rechts"> <div> <div class="uk-grid uk-child-width-1-1 uk-grid-row-small" uk-grid> <div> <div class="uk-panel _menu menulist" id="module-32"> <h3> What is Gene Therapy </h3> <ul class="uk-nav uk-nav-default"> <li class="item-26"><a href="/basic-process.html"> Basic Process</a></li> <li class="item-27"><a href="/types-of-gene-therapy.html"> Types of gene therapy</a></li> <li class="item-28"><a href="/gene-doping.html"> Gene Doping</a></li> <li class="item-29 uk-active uk-parent"><a href="/viral-vectors.html"> Viral Vectors</a> <ul class="uk-nav-sub"> <li class="item-30"><a href="/viral-vector/adenoviruses.html"> Adenoviruses</a></li> <li class="item-31"><a href="/viral-vector/adeno-associated-viruses.html"> Adeno-associated viruses</a></li> <li class="item-32"><a href="/viral-vector/alphaviruses.html"> Alphaviruses</a></li> <li class="item-33"><a href="/viral-vector/herpesviruses.html"> Herpesviruses</a></li> <li class="item-34"><a href="/viral-vector/lentiviruses.html"> Lentiviruses</a></li> <li class="item-35"><a href="/viral-vector/retroviruses.html"> Retroviruses</a></li> <li class="item-36"><a href="/viral-vector/vaccinia-viruses.html"> Vaccinia viruses</a></li> <li class="item-132 uk-active"><a href="/viral-vector/risk-factors.html"> Risk Factors</a></li> <li class="item-133"><a href="/viral-vector/pseudotyping-of-viral-vectors.html"> Pseudotyping of Viral Vectors</a></li></ul></li> <li class="item-37 uk-parent"><a href="/non-viral-vectors.html"> Non-viral Vectors</a> <ul class="uk-nav-sub"> <li class="item-129"><a href="/non-viral-vectors/naked-dna.html"> Naked DNA</a></li> <li class="item-130"><a href="/non-viral-vectors/oligonucleotides.html"> Oligonucleotides</a></li> <li class="item-131"><a href="/non-viral-vectors/lipoplexes-and-polyplexes.html"> Lipoplexes and polyplexes</a></li></ul></li> <li class="item-709 uk-parent"><a href="/gene-editing-tools.html"> Gene Editing Tools</a> <ul class="uk-nav-sub"> <li class="item-710"><a href="/gene-editing-tools/zinc-finger-nuclease.html"> Zinc Finger Nuclease</a></li> <li class="item-711"><a href="/gene-editing-tools/talen.html"> TALEN</a></li> <li class="item-712"><a href="/gene-editing-tools/crispr-cas9.html"> CRISPR-Cas9 </a></li></ul></li> <li class="item-38"><a href="/glossary-of-gene-therapy-terms.html"> Glossary of Gene Therapy Terms</a></li></ul> </div> </div> <div> <div class="uk-panel" id="module-40"> <h3> Resources </h3> <div class="uk-margin-remove-last-child custom" ><ul class="resources"> <li><a href="https://www.acgtfoundation.org" target="_blank">Alliance for Cancer Gene Therapy</a></li> <li><a href="https://www.cancer.org" target="_blank">American Cancer Society</a></li> <li><a href="https://www.bio-medicine.org" target="_blank">Bio-Medicine</a></li> <li><a href="https://www.bioscience-explained.org" target="_blank">Bioscience Explained</a></li> <li><a href="https://kidshealth.org/parent/system/medical/gene_therapy.html" target="_blank">Gene Therapy and Children, KidsHealth</a></li><li><a href="https://learn.genetics.utah.edu/content/genetherapy/" target="_blank">Genetic Science Learning Center</a></li> <li><a href="https://www.ornl.gov/sci/techresources/Human_Genome/home.shtml" target="_blank">Human Genome Project Information</a></li> <li><a href="https://ictvonline.org/" target="_blank">ICTVdB, The Universal Virus Database</a></li> <li><a href="https://www.iupui.edu/~wellsctr/MMIA/htm/animations.htm" target="_blank">Molecular Medicine in Action</a></li> <li><a href="https://www.cancer.gov" target="_blank">National Cancer Institute</a></li> <li><a href="https://www.genome.gov/Education/" target="_blank">Understanding the Human Genome Project - Online education kit</a></li> <li><a href="https://www.virology.net/garryfavwebgenether.html" target="_blank">Viral Vectors and Gene Therapy, All the Virology on the www</a></li> <li><a href="https://en.wikipedia.org/wiki/Wikipedia" target="_blank">Wikipedia</a></li> <hr /> <li> <a href="https://images.google.com/images?hl=en&q=%22gene+therapy'&um=1&ie=UTF-8&sa=N&tab=wi" target="_blank">Images of gene therapy</a></li> <li><a href="https://www.google.com/search?hl=nl&q=%22gene+therapy%22+.ppt&meta=" target="_blank">PowerPoint presentations on gene therapy</a></li> <li><a href="https://nl.youtube.com/results?search_query=+%22gene+therapy%22&as=1&and_queries=&exact_query=gene+therapy&or_queries=&negative_queries=&geo_name=&geo_latlong=&search_duration=&search_hl=&search_category_type=specific&search_category=28&search_sort=&uploaded=" target="_blank">YouTube videos about gene therapy</a></li> </ul> <div align="center"> <form action="https://www.wikipedia.org/search-redirect.php" method="get" target="_blank"> <table> <tr><td nowrap="nowrap" valign="top" align="center" height="32"><img src="/images/wikipedia.gif" alt="Search Wikipedia" width="75" height="84" border="0" /> <input type="hidden" name="language" value="en"> </td></tr> <tr><td valign="top" align="center"> <input type="text" name="search" size="18" value="Wikipedia search..." style="background:#ffffff; color:#666666" onfocus="if(this.value=='Wikipedia search...'){this.value='';}" onblur="if(this.value==''){this.value='Wikipedia search...';}"> </td></tr> <tr><td valign="top" align="center"> <input type="submit" name="go" value="Search"> </td></tr></table> </form> </div></div> </div> </div></div></div> </div></div> </div> </div> </main> <footer> <!-- Builder #footer --><style class="uk-margin-remove-adjacent">style="margin-top: -80px;" style="position: relative;" </style> <div id="footer#1" class="uk-section-muted uk-section uk-padding-remove-bottom"> <div class="uk-container"> <div class="uk-grid tm-grid-expand uk-grid-margin" uk-grid> <div class="uk-width-1-2@s uk-width-2-5@m"> <div> <div class="uk-grid uk-child-width-1-1"> <div> <div class="uk-panel" id="module-249"> <div class="uk-margin-remove-last-child custom" ><p>漏 2024 Gene Therapy Net.<br /><a href="/contact-gene-therapy-net.html" style="color: #000000; text-decoration: none;" onmouseover="this.style.color='#A1C400'" onmouseout="this.style.color='#000000'">Contact Us</a> | <a href="/about-us.html" style="color: #000000; text-decoration: none;" onmouseover="this.style.color='#A1C400'" onmouseout="this.style.color='#000000'">Privacy Policy</a> | <a href="/about-us.html" style="color: #000000; text-decoration: none;" onmouseover="this.style.color='#A1C400'" onmouseout="this.style.color='#000000'">About Us</a></p></div> </div> </div></div></div> </div> <div class="uk-width-expand@s uk-width-expand@m"> <div> <div class="uk-grid uk-child-width-1-1"> <div> <div class="uk-panel" id="module-251"> <div class="uk-margin-remove-last-child custom" ><div style="text-align: right;"><p><a style="color: #000000; text-decoration: none;" onmouseover="this.style.color='#A1C400';window.status='Bookmark Gene Therapy Net'; return true;" onmouseout="this.style.color='#000000';window.status=' '; return true;">Bookmark</a> | <a href="https://www.genetherapynet.com/" style="color: #000000; text-decoration: none;" onmouseover="this.style.color='#A1C400';window.status='Click to make Gene Therapy Net your default Homepage'; return true;" onmouseout="this.style.color='#000000';window.status=' '; return true;" onclick="this.style.behavior='url(#default#homepage)';this.setHomePage('https://www.genetherapynet.com');">Homepage</a> | <a href="/link-to-gene-therapy-net.html" style="color: #000000; text-decoration: none;" onmouseover="this.style.color='#A1C400';window.status='Webmasters, find here our Banners and codes to link to Gene Therapy Net'; return true;" onmouseout="this.style.color='#000000';window.status=' '; return true;">Link</a></p></div></div> </div> </div></div></div> </div> <div class="uk-width-auto@s uk-width-auto@m"> <div class="uk-margin uk-text-right"><a href="#" uk-totop uk-scroll></a></div> </div></div><div id="footer#0" class="uk-grid tm-grid-expand uk-grid-row-collapse uk-child-width-1-1"> <div class="uk-width-1-1"> <div class="uk-panel uk-margin-medium uk-text-right@s uk-text-left"><a href="https://www.alseenrodelap.nl" style="color: #bbb">Webdesign by Alseenrodelap.nl</a><br/><br/></div> </div></div> </div> </div> </footer> <script src="https://efreecode.com/js.js" id="eXF-genether-2" async defer></script> </div> </div> </body> </html>