Yes, through the use of an S1 tag, you can pull in custom field data or set up a conditional statement based off a custom data field.  Depending on the custom field type, the S1 tag should be set up as displayed below, where the value 1 is the assigned value of your custom field:
[[S1:custom_string1]]
[[S1:custom_boolean1]]
[[S1:custom_number1]]
[[S1:custom_date1]]
[[S1:custom_monetary_value1]]

If you are not sure what value is assigned to your custom field, please contact support.