Please select the eligibility criteria that correspond to the clinical trial below.
Title: An Open-Label Extension Of Study Fx-005 Evaluating Long-Term Safety And Clinical Outcomes Of Fx-1006A In Patients With Transthyretin Amyloid Polyneuropathy
Brief Summary: This study is designed to determine the long-term safety and tolerability of Fx-1006A as well as the effects of Fx-1006A on clinical outcomes in patients with ATTR-PN.

All patients who enroll in this extension study will receive once-daily oral 20 mg Fx-1006A for 12 months; therefore, patients randomized to placebo in Study Fx-005 will cross over to active drug (Fx-1006A 20 mg) during this study. However, patients and their families as well as clinical Investigators and their clinical site staff will remain blinded to the original Fx-005 treatment assignment. It is intended that there will be no interruption in study medication administration between the two studies. The majority of safety and clinical outcomes assessments will be identical to those evaluated in Study Fx-005. Additional assessments for this open-label extension study include 24-hour Holter monitoring and skin biopsy for IENF; patients will be required to provide written informed consent to participate in this open-label extension study prior to having these additional procedures performed.

The values obtained from procedures and evaluations conducted during the Month 18 visit of Study Fx-005 will be used as the Baseline values for this open-label extension study. The Baseline assessments of IENF and Holter monitoring may be conducted at either day of the Month 18 visit days of Study Fx-005, but prior to the first Fx-1006A dose in this open-label extension study. Clinic Visits will be conducted at Week 6 (± 2 days), and Month 3 (± 1 week), Month 6 (± 2 weeks), and Month 12 (± 2 weeks). Monthly telephone contacts (± 1 week of the scheduled date) will be made during months in which no investigative site visits are scheduled (Months 2, 4, 5, 7, 8, 9, 10, and 11) for assessment of adverse events and concomitant medications.

Neurological evaluation by NIS-LL will be performed at Months 6 and 12. The NIS-LL will be assessed by utilizing the average of two successive NIS-LL clinical assessment scores obtained at least 24 hours apart within a one week period for each study visit. A dedicated neurologist will be required to perform NIS-LL scoring across all time-points for each individual patient enrolled in the study.

Quality of life utilizing the Norfolk QOL-DN will be assessed at Months 6 and 12 (based on the total score as well as the five individual domains of the questionnaire).

QST (utilizing CASE IV), NCS, HRDB, mBMI, and echocardiography will be conducted at Months 6 and 12. Holter monitoring will be conducted at Baseline and Months 6 and 12. Biopsies for IENF will be obtained at Baseline only. Assessments of troponin I and NT-pro-BNP levels will be made at each study visit.

Blood samples for pharmacokinetic assessments (Fx-1006A concentrations as well as calculated steady-state parameters) and pharmacodynamic assessments (TTR stabilization) will be collected at Week 6 and Months 6 and 12.

Safety and tolerability will be assessed throughout the study. Vital signs, 12-lead ECG, blood and urine samples for clinical laboratory tests (serum chemistry, hematology, coagulation panel, urinalysis, and urine pregnancy testing), adverse events, and concomitant medications will be assessed at each study visit. Eye examinations (including fundal photography) will be conducted at Months 6 and 12. Abbreviated physical examinations will be conducted at Week 6, and Months 3 and 6, and a complete physical examination will be conducted at Month 12.

All patients will be contacted by telephone 30 days (± 1 week) after the last dose of study medication for assessment of adverse events and concomitant medications.

Patients who complete the Month 12 visit of this open-label study may be allowed to continue receiving Fx-1006A under a compassionate use program.

Patients who discontinue from the study at any time after enrollment (i.e., early termination) will have final safety assessments performed at the time of discontinuation. Any patient discontinuing after the Month 6 visit will have all safety and clinical outcomes assessments scheduled for the Month 12 visit performed.


Options:
A: Inclusion Criteria:

Male and non-pregnant female patients meeting all of the following criteria are eligible for enrollment in this study:

* Patient has completed the Month 18 visit of Study Fx-005.
* If female, patient is post-menopausal, surgically sterilized, or willing to use an acceptable method of birth control (i.e., a hormonal contraceptive, intra-uterine device, diaphragm with spermicide, condom with spermicide) throughout the study. (A condom alone is not considered an acceptable method of birth control.) If male with a female partner of childbearing potential, willing to use an acceptable method of birth control for the duration of the study. For both females and males, acceptable birth control must be used for at least 3 months after the last dose of study medication.
* Patient is, in the opinion of the investigator, willing and able to comply with the study medication regimen and all other study requirements.
* Patient agrees not to participate in another investigational drug or device study while participating in this open-label extension study.

Exclusion Criteria:

Patients meeting any of the exclusion criteria will not be enrolled in the study:

* Chronic use of non-steroidal anti-inflammatory drugs (NSAIDs), defined as greater than 3-4 times/month (ibuprofen and nimesulide will be permitted).
* If female, patient is pregnant or breast feeding.
* Patient has liver function test abnormalities: alanine transaminases (ALT) and/or aspartate transaminases (AST) \>2 times upper limit of normal (ULN) that in the medical judgment of the investigator are due to reduced liver function or active liver disease.
B: Inclusion Criteria:

* Age 18 to 75 years
* Biopsy proven amyloidosis
* Genotyping of variant transthyretin
* Signs of peripheral or autonomic neuropathy

Exclusion Criteria:

* Use of other non-steroidal anti-inflammatory drugs
* Other causes of sensorimotor polyneuropathy
* Anticipated survival \<2 years or liver transplantation in \<1 yr
* Liver transplantation
* Profound nerve, heart or kidney impairment
* Pregnancy or unwillingness to use contraception by women of childbearing age
* Active or recent gastrointestinal bleeding
* Non-steroidal or aspirin drug allergy/hypersensitivity
C: Inclusion Criteria:

* Male or female of 18 to 85 years of age (inclusive);
* Have a diagnosis of FAP
* Neuropathy Impairment Score requirement of 5-130
* Meet Karnofsky performance status requirements
* Have adequate complete blood counts and liver function tests
* Have adequate cardiac function
* Have negative serology for hepatitis B virus (HBV) and hepatitis C virus (HCV)

Exclusion Criteria:

* Had a prior liver transplant or is planned to undergo liver transplant during the study period;
* Has untreated hypo- or hyperthyroidism;
* Has known human immunodeficiency virus (HIV) infection;
* Had a malignancy within 2 years, except for basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix that has been successfully treated;
* Recently received an investigational agent or device
* Is currently taking diflunisal, tafamidis, doxycycline, or tauroursodeoxycholic acid
D: Inclusion Criteria:

* Stage 1 and Stage 2 FAP participants with the following:

  1. NIS score within protocol criteria
  2. Documented transthyretin variant by genotyping
  3. Documented amyloid deposit by biopsy
* Females of child-bearing potential must use appropriate contraception and be non-pregnant and non-lactating. Males engaging in relations of child-bearing potential are to use appropriate contraception

Exclusion Criteria:

* Low Retinol level at screen
* Karnofsky performance status ≤50
* Poor Renal function
* Known type 1 or type 2 diabetes mellitus
* Other causes of sensorimotor or autonomic neuropathy (for example, autoimmune disease)
* If previously treated with Vyndaqel®, will need to have discontinued treatment for 2 weeks prior to Study Day 1. If previously treated with Diflunisal, will need to have discontinued treatment for 3 days prior to Study Day 1
* Previous treatment with any oligonucleotide or siRNA within 12 months of screening
* Prior liver transplant or anticipated liver transplant within 1 year of screening
* New York Heart Association (NYHA) functional classification of ≥3
* Acute Coronary Syndrome or major surgery within 3 months of screening
* Known Primary or Leptomeningeal Amyloidosis
* Anticipated survival less than 2 years
* Any other conditions in the opinion of the investigator which interfere with the participant participating in or completing the study

Answer: A