How to use related DAX function with concatenate

[im_newbie_123]

I have two tables (A and B).

Table A has 4 columns.

User ID                    First Name        Last Name      Preferred Name  

Table B has 1 column named User ID

I want to create a new column named Person Name in Table B based on User ID where I concatenate first name, last name and preferred name.

Example:

Table A 

User ID        First Name        Last Name      Preferred Name  

123                Sam                    John                  NULL

4351               Samuel              Hans                  Samu

Table B

User ID         Person Name

123                John, Sam

4351              Hans, Samuel (Samu)

Power BI creats a relationship between the Table A and Table B based on User ID

I understand I need to use related DAX function and concatenate the columns. 

can i get the correct syntax.

[Anonymous]

@im_newbie_123 im_n

Column = CONCATENATE(CONCATENATE(RELATED(TableA[Last]),","),RELATED(TableA[First]))