Table 1. Report of rheumatoid arthritis successfully treated with biologics.

References	Number of cases	Biologics	First biopsy organ	First biopsy organ lesions	Repeat biopsy organ	Repeat biopsy organ lesions	Number of kidney function improvement or stable cases
[8]	4	Infliximab	Gastrointestinal mucosa	Congo-red-positive deposits were seen in gastric mucosal and submucosal lesions	Gastrointestinal mucosa	The percentage of areas of amyloid deposition was decreased	4
[8]	10	Etanercept	Gastrointestinal mucosa	Congo-red-positive deposits were seen in gastric mucosal and submucosal lesions	Gastrointestinal mucosa	The percentage of areas of amyloid deposition was decreased	7
[9]	1	Etanercept	Gastrointestinal mucosa	Heavy deposition of amyloid was visible in lamina propria and vascular walls of all specimens	Gastrointestinal mucosa	Amyloid deposition was decreased	1
[10]	1	Tocilizumab	Kidney	Deposition of amyloid was seen in the mesangial area and vascular wall	n/a	n/a	1
[12]	3	Tocilizumab	Salivary gland	Deposition of amyloid was seen	n/a	n/a	2
[12]	5	Tocilizumab	Kidney	Deposition of amyloid was seen	n/a	n/a	5

n/a = not available.