THE GOAL OF THIS SURVEY IS TO OBTAIN
STANDARDIZED INFORMATION ABOUT TH NATURAL HISTORY OF HOMOCYSTINURIA
DUE TO CYSTTHIONINE B-SYNTHASE DEFICIENCY, TAKING INTO ACCOUNT
GENETIC HETEROGENEITY AND THE EFFECT OF VARIOUS TREATMENTS. THE
RESULTS SHOULD PERMIT MORE RATIONAL AND BETTER TREATMENT OF THESE
PATIENTS.
On behalf of this Federal agency, I certify that
the collection of information encompassed by this request complies
with 5 CFR 1320.9 and the related provisions of 5 CFR
1320.8(b)(3).
The following is a summary of the topics, regarding
the proposed collection of information, that the certification
covers:
(i) Why the information is being collected;
(ii) Use of information;
(iii) Burden estimate;
(iv) Nature of response (voluntary, required for a
benefit, or mandatory);
(v) Nature and extent of confidentiality; and
(vi) Need to display currently valid OMB control
number;
If you are unable to certify compliance with any of
these provisions, identify the item by leaving the box unchecked
and explain the reason in the Supporting Statement.