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Á÷Àå¾ÏÀÇ ±ÙÄ¡Àû ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á¿Í È­Çпä¹ýÀÇ ¼ø¼­¿¡ ´ëÇÑ °íÂû A Prospective Randomized Trial Comparing the Sequence of Adjuvant Chemotherapy and Radiotherapy following Curative Resection of Stage ¥±, ¥² Rectal Cancer

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1±è°æÁÖ/1Kyoung Ju Kim 1±èÁ¾ÈÆ/1ÃÖÀº°æ/1ÀåÇý¼÷/1¾È½Âµµ/2ÀÌÁ¦È¯/3±èÁøõ/3À¯Ã¢½Ä/1Jong Hoon Kim/1Eun Kyung Choi/1Hyesook Chang/1Seung Do Ahn/2Je Hwan Lee/3Jin Cheon Kim/3Chang Sik Yu

Abstract

¸ñÀû : ±ÙÄ¡Àû ¼ö¼úÀ» ½ÃÇà¹ÞÀº Á÷Àå¾Ï ȯÀÚ¿¡¼­ ¼ö¼ú ÈÄ º¸Á¶Ä¡·á·Î¼­ È­Çпä¹ý°ú ¹æ»ç¼±Ä¡·á¸¦
½ÃÇà½Ã, ¹æ»ç¼±Ä¡·á¿Í È­Çпä¹ýÀÇ ½ÃÇà ½ÃÁ¡¿¡ µû¸¥ ºÎÀÛ¿ë°ú Ä¡·á ½ÇÆÐ ¾ç»ó, »ýÁ¸À²À» ºñ±³ÇÏ°í
ÀÚ ÀüÇâÀû ¹«ÀÛÀ§ 3»ó Àӻ󿬱¸¸¦ ½ÃÇàÇÏ¿© °¡Àå ÀûÀýÇÑ È­Çпä¹ý°ú ¹æ»ç¼±Ä¡·á ¼ø¼­¸¦ °áÁ¤ÇÏ°í
ÀÚ ÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : 1996³â 1¿ùºÎÅÍ 1999³â 3¿ù±îÁö ±ÙÄ¡Àû ÀýÁ¦¼úÀ» ½ÃÇà¹ÞÀº AJCC º´±â 2±â ¹× 3
±âÀÇ Á÷Àå¾Ï ȯÀÚ 313¸íÀ» ´ë»óÀ¸·Î Á¶±â ¹æ»ç¼± Ä¡·á±º(arm I)°ú Áö¿¬ ¹æ»ç¼± Ä¡·á±º (arm ¥±)
À¸·Î ³ª´©¾î ¹æ»ç¼±Ä¡·á¿Í È­Çпä¹ý º´¿ëÄ¡·á¸¦ ½ÃÇàÇÏ¿´´Ù. È­Çпä¹ýÀº 5-FU 375
mg/m2/day¿Í leucovorin 20 mg/m2/day¸¦ ¹æ»ç¼±Ä¡·á¿Í µ¿½ÃÄ¡·á ±â
°£¿¡´Â 3ÀÏ°£¾¿, È­Çпä¹ý ´Üµ¶ ±â°£ µ¿¾È¿¡´Â 5ÀÏ°£¾¿ ÃÑ 8ȸ¸¦ Á¤¸ÆÁÖ»ç ÇÏ¿´°í ¹æ»ç¼±Ä¡·á´Â
Àü°ñ¹Ý ¿µ¿ª¿¡ 45 Gy/25 fractions/5 weeks¸¦ ½ÃÇàÇÏ¿´´Ù. ÀÌ Áß 1998³â 6¿ù±îÁö µî·ÏµÈ 228¸íÀ»
´ë»óÀ¸·Î Áß°£ ºÐ¼®À» ½ÃÇàÇÏ¿´°í 228¸íÁß µÎ ¸íÀÇ È¯ÀÚ´Â ÀÌÂ÷ÀûÀÎ ¿ø¹ßÁ¾¾çÀÇ ¹ß»ýÀ¸·Î ºÐ¼®¿¡
¼­ Á¦¿ÜµÇ¾ú´Ù. Arm lÀº 1ȸÂ÷ È­Çпä¹ý°ú µ¿½Ã¿¡ ¹æ»ç¼±Ä¡·á¸¦ ½ÃÇàÇÏ¿´°í, Arm ¥±´Â È­Çпä¹ý
À» 2ȸ ¸¶Ä£ ÈÄ 3ȸÂ÷¿Í µ¿½Ã¿¡ ½ÃÇàÇÏ¿´´Ù. Áß¾ÓÃßÀû°üÂû±â°£Àº 23°³¿ùÀ̾ú´Ù.
°á°ú : ±¹¼ÒÀç¹ßÀº Arm l¿¡¼­ 11¸í(9.7%), Arm ¥±¿¡¼­ 9¸í(8%)À̾ú°í µÎ ±¸°£¿¡ Åë°èÀûÀ¸·Î ÀÇ
¹ÌÀÖ´Â Â÷ÀÌ´Â ¾ø¾úÀ¸³ª ¿ø°ÝÀüÀÌ´Â Arm l¿¡¼­ 22¸í(19.5), Arm ¥±¿¡¼­ 35¸í(31%)À¸·Î ÀǹÌÀÖ°Ô
Arm l¿¡¼­ ³·°Ô ³ªÅ¸³µ´Ù(p=0.046). ±×·¯³ª 3³â ¹«º´»ýÁ¸À²(70.2% vs 59.2%, p=0.2)°ú 3³â »ýÁ¸
À²(89.4% 88.0%, p=0.47)Àº À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù. ¹æ»ç¼±Ä¡·á Áß RTOG grade 1 ÀÌ»óÀÇ ¹éÇ÷±¸
°¨¼Ò´Â 78.3¿¡¼­ °üÂûµÇ¾ú°í ¹æ»ç¼±Ä¡·á ÈÄ È­Çпä¹ý ±â°£ µ¿¾È¿¡´Â 79.9%¿¡¼­ °üÂûµÇ¾úÀ¸³ª,
RTOG grade 3 ÀÌ»óÀÇ ¹éÇ÷±¸ °¨¼ÒÁõÀº °¢°¢ 2.1%, 6%·Î ¸Å¿ì ³·°Ô ³ªÅ¸³µ´Ù. ÀúÀ§Àü¹æÀýÁ¦¼úÀ»
½ÃÇà¹ÞÀº ȯÀÚ Áß ÇÏ·ç 10ȸ ÀÌ»óÀÇ ¼³»ç¸¦ ÇÑ È¯ÀÚ´Â Arm l¿¡¼­ 71.2%, Arm ¥±¿¡¼­ 42.6%·Î
ÀǹÌÀÖ°Ô Arm l¿¡¼­ ³ô¾ÒÀ¸³ª(p=0.02) ÀÌ·¯ÇÑ ºÎÀÛ¿ëÀº º¸Á¶ÀûÀÎ Ä¡·á·Î ȸº¹µÇ¾ú´Ù.
°á·Ð : ±ÙÄ¡Àû ÀýÁ¦¼ú ÈÄ ±× ¼ø¼­¿¡ °ü°è¾øÀÌ ¹æ»ç¼±Ä¡·á¿Í È­Çпä¹ýÀ» ½ÃÇàÇÔÀ¸·Î½á ±¹¼ÒÀç¹ßÀ²
À» ³·Ãâ ¼ö ÀÖ¾ú´Ù. ¿ø°ÝÀüÀÌ´Â ¼ö¼ú ÈÄ Á¶±â ¹æ»ç¼±Ä¡·á±º¿¡¼­ ´õ ³·Àº °ÍÀ¸·Î ³ªÅ¸³µ´Âµ¥ ¶Ñ·Ç
ÇÑ ¿øÀÎÀº ¹àÈú ¼ö ¾ø¾ú°í ÇâÈÄ ÃßÀû °üÂûÀÌ ´õ ÇÊ¿äÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù. º» Ä¡·á´Â ´ëºÎºÐÀÇ È¯
ÀÚ°¡ Å« ºÎÀÛ¿ë ¾øÀÌ ¸¶ÃÄ ºñ±³Àû ¾ÈÀüÇÑ Ä¡·áÀÓÀ» È®ÀÎÇÒ ¼ö ÀÖ¾úÁö¸¸, Ä¡·á ¼øÀÀµµ´Â Á» ´õ ³ô
¾ÆÁ®¾ß ÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.

Purpose : To evaluate the side effects, pattern of failure, and survival rate according to the
sequence of postoperative adjuvant radiotherapy and chemotherapy, patients with stages ¥±
and ¥² rectal cancer who had undergone curative resection were randomized to¡®early
radiotherapy group (arm ¥°)¡¯or¡®late radiotherapy group (arm ¥±)¡¯, then we intend to
determine the most effective sequence of the radiotherapy and chemotherapy.
Materials and Methods : From January 1996 to March 1999, 313 patients with curatively
resected stages ¥± and ¥² rectal cancer have been randomized to early or late radiation
therapy group and received combined chemotherapy (5-FU 375 §·/m2/day,
leucovorin 20 §·/m2, ¥³ bolus daily D1-5, 8 cycles) and radiation therapy (whole
pelvis with 45 Gy/25 fractions/5 weeks). Arm ¥° received radiation therapy from day 1 with
first cycle of chemotherapy and arm ¥± received radiation therapy from day 57 with third
cycle of chemotherapy after completion of first two cycles. Preliminary analysis was
performed with 228 patients registered up to Jun 1998. Two out of the 228 patients were
excluded because of double primary cancer. Median follow-up period was 23 months.
Results : Local recurrence occurred in 11 patients (9.7£¥) for arm ¥° and 9 patients (8£¥) for
arm ¥±. There was no significant difference between both groups (p=0.64). However, distant
metastasis was found in 22 patients (19.5£¥) for arm ¥° and 35 patients (31.0£¥) form arm ¥±
and which showed statistically significant difference between the two groups (p=0.046). And
neither 3-year disease-free survival (70.2£¥ vs 59.2£¥, p=0.2) nor overall survival (89.4£¥ vs
88.0£¥, p=0.47) showed significant differences. The incidence of leukopenia during radiation
therapy and chemotherapy was 78.3£¥ and 79.9£¥ respectively but leukopenia more than
RTOG grade 3 was only 2.1£¥ and 6.0£¥ respectively. The incidence of diarrhea more than 10
times per day was significantly higher in the patients for arm ¥°than for arm ¥± (71.2£¥ vs
41.6£¥, p=0.02) but this complication was controlled with supportive cares.
Conclusion : Regardless of the sequence of postoperative adjuvant radiation therapy and
chemotherapy after curative resection for rectal cancer, local recurrence rate was low with
combined chemoradiotherapy. But distant metastasis rate was lower in early radiation therapy
group than in late radiation therapy group and the reason is unclear. Most patients completed
these treatments without severe complication, so these were thought to be safe treatments but
the treatment compliance should be impoved.

Å°¿öµå

Á÷Àå¾Ï; ¹æ»ç¼±Ä¡·á; È­Çпä¹ý; 3»ó Àӻ󿬱¸; Rectal cancer; Radiation therapy; Chemotherapy; Phase ¥² clinical trial;

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