Table 2. Review of literature for the results of DBS in patients with DYT6 dystonia .

Study No.	Year	First author	Reference No.	No. patients	Follow up	Motor score improvement	Speech improvement
1	2010	Groen et al.	1	4	6 months	33%	Little/ no
2	2010	Zittle et al.	4	2	2-7 years	Moderate	No
3	2011	Jech et al.	10	1	32 months	85%	Fair
4	2012	Panov et al	9	3	3 years	48%	Little/no
5	2012	Franca et al	12	1	2 months	59%	Not mentioned
6	2012	Miyamoto et al.	13	1	Years	Moderate, needed second surgery	Not mentioned