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¼Ò¾Æ ¸¸¼º BÇü °£¿° ȯ¾Æ¿¡¼­ ¶ó¹ÌºÎµòÀÇ Ä¡·á È¿°ú Efficacy of Lamivudine Therapy for Chronic Hepatitis B in Children

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ÀÌÀºÇý, ±è°æ¸ð, ÀåÁÖ¿µ,
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ÀÌÀºÇý ( Lee Eun-Hye ) 
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±è°æ¸ð ( Kim Kyung-Mo ) 
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ÀåÁÖ¿µ ( Jang Joo-Young ) 
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Abstract

¸ñ Àû: ¼Ò¾Æ ¸¸¼º BÇü °£¿° ȯ¾Æµé¿¡¼­ ¶ó¹ÌºÎµò Ä¡·áÀÇ È¿°ú¿Í Áö¼Ó¼º¿¡ ´ëÇØ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

¹æ ¹ý: 1998³â 1¿ùºÎÅÍ 2008³â 5¿ù±îÁö ¼­¿ï¾Æ»êº´¿ø ¼Ò¾Æ°ú¿¡¼­ ¸¸¼º BÇü °£¿°À¸·Î Áø´Ü¹Þ°í ¶ó¹ÌºÎµò Ä¡·á¸¦ ¹ÞÀº 44¸íÀÇ È¯¾ÆµéÀÇ Àǹ«±â·ÏÀ» ÈÄÇâÀûÀ¸·Î ºÐ¼®ÇÏ¿´´Ù. 12°³¿ù ÀÌ»ó ÃßÀû °üÂûÇß´ø ȯ¾ÆµéÀ» ´ë»óÀ¸·Î ¹ßº´½Ã ¼ºº°, ¿¬·É, Ä¡·á ÀüÈÄÀÇ ALT, Ç÷û HBV- DNA, HBeAg, anti HBe, HBsAg, anti HBsÀÇ º¯È­¸¦ Á¶»çÇÏ¿´°í, Ä¡·áÀÇ Áö¼Ó¼º°ú ³»¼º ¹ßÇö¿¡ ´ëÇØ Á¶»çÇÏ¿´´Ù.

°á °ú: ¶ó¹ÌºÎµò Ä¡·á ÈÄ 3³â À̳»¿¡ ÃÑ 44¸íÀÇ È¯¾Æ Áß 21¸í(48%)¿¡¼­ Ç÷û ÀüȯÀÌ ÀÌ·ç¾îÁ³°í, 34¸í(77%)¿¡¼­ HBV DNA°¡ À½ÀüµÇ¾úÀ¸¸ç, 41¸í(93%)¿¡¼­ Ç÷û ALT°¡ Á¤»óÈ­µÇ¾ú´Ù. Kaplan-Meier¹ý¿¡ ÀÇÇÑ HBeAg ´©Àû Ç÷û ÀüȯÀ²Àº 3³â°¿¡ 60%·Î ³ªÅ¸³µ´Ù. Ä¡·á¸¦ ¸¶Ä£ ȯ¾Æ 25¸í Áß Ç÷û ÀüȯµÈ 18¸íÀÇ È¯¾Æ ¸ðµÎ ¾à¹° Áß´Ü ÀÌÈÄ ÃÖ´ë 3³â ÃßÀû °üÂû½Ã Àç¹ß ¾øÀÌ Áö³»°í ÀÖ¾î ¶ó¹ÌºÎµò Ä¡·á ¹ÝÀÀÀÇ Áö¼Ó¼ºÀ» º¸¿© ÁÖ¾ú´Ù. Ä¡·á Áß 12¸í(27%)¿¡¼­ µ¹ÆÄ Çö»óÀÌ ³ªÅ¸³µ°í, 11¸í(25%)¿¡¼­ YMDD µ¹¿¬º¯ÀÌ°¡ ¹ß°ßµÇ¾ú´Ù. Ä¡·á Àü Ç÷û ALT ¼öÄ¡´Â Ç÷û ÀüȯÀ» ÀÌ·é ±º¿¡¼­ ´õ ³ô¾ÒÁö¸¸, Åë°èÀû À¯ÀǼºÀº ¾ø¾ú´Ù(338¡¾542 IU/L vs. 144¡¾163 IU/L, p£¾0.05).

°á ·Ð: ¸¸¼º BÇü °£¿° ȯ¾Æ¿¡¼­ ¶ó¹ÌºÎµò Ä¡·á½Ã Àý¹Ý Á¤µµ¿¡¼­ Ä¡·á È¿°ú¸¦ ±â´ëÇÒ ¼ö ÀÖ¾ú´Ù. ¶ó¹ÌºÎµòÀÇ Ä¡·á ¹ÝÀÀÀº Àå±âÀûÀ¸·Î Áö¼ÓµÇ¾úÀ¸¸ç, ÇâÈÄ ¾àÁ¦ ³»¼º µ¹¿¬º¯ÀÌÀÇ Áõ°¡¿¡ µû¸¥ ÀÌÂ÷ ¾àÁ¦¿¡ ´ëÇÑ Ãß°¡ÀûÀÎ ¿¬±¸°¡ ÇÊ¿äÇÏ´Ù°í »ý°¢µÈ´Ù.

Purpose: Lamivudine is known to be effective for the treatment of chronic hepatitis B in adults. However, data on lamivudine therapy in pediatrics is limited. The aim of this study was to evaluate the efficacy and durability of lamivudine therapy for chronic hepatitis B in Korean children.

Methods: A total of 44 children (27 males and 17 females, ages 6 months to 14.8 years, mean age 6.7 years) with chronic hepatitis B who received lamivudine (3 mg/kg/day, max 100 mg) for at least 12 months were enrolled. We evaluated the serum AST, ALT and serological HBV markers (HBsAg and anti-HBs, HBeAg and anti HBe, and HBV DNA) periodically. Predictive three year cumulative seroconversion rates were obtained using the Kaplan-Meier method.

Results: Twenty one (48%) of 44 children achieved seroconversion of HBeAg by three years, while 23 (42%) children did not. HBV DNA was cleared in 34 (77%) children and the serum ALT levels were normalized in 41 children (93%). The three year cumulative seroconversion rates were 60% for HBeAg, and the clearance rates were 76% for HBV DNA. Eighteen children who discontinued lamivudine after HBeAg seroconversion maintained the therapeutic response for three years (treatment duration 13¡­58 months mean 24 months). Viral breakthrough developed in 12 children (27%) during the therapy and the YMDD mutation was documented in 11 children (25%). The mean duration for the development of a mutation was 22.7 months. Loss of HBsAg occurred in 6 children (14%). The pretreatment ALT levels were higher in responders; however, the differences were not statistically significant (p£¾0.05).

Conclusion: The results of this study showed that lamivudine treatment had a favorable effect and durable therapeutic response in children with chronic hepatitis B. Long term follow-up and alternative therapy are warranted for those patients who do not respond to this treatment.

Å°¿öµå

Chronic hepatitis B;Lamivudine;Seroconversion;Resistance;YMDD mutation

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KoreaMed
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