Insulin Glargine

5 WARNINGS AND PRECAUTIONS Never share a BASAGLAR prefilled pen between patients, even if the needle is changed. ( 5.1 ) Hyperglycemia or hypoglycemia with changes in insulin regimen: Make changes to a patient’s insulin regimen (e.g., insulin strength, manufacturer, type, injection site or method of administration) under close medical supervision with increased frequency of blood glucose monitoring. ( 5.2 ) Hypoglycemia: May be life-threatening. Increase frequency of glucose monitoring with changes to: insulin dosage, co-administered glucose lowering medications, meal pattern, physical activity; and in patients with renal or hepatic impairment and hypoglycemia unawareness. ( 5.3 , 6.1 ) Hypoglycemia due to medication errors: Accidental mix-ups between insulin products can occur. Instruct patients to check insulin labels before injection. ( 5.4 ) Hypersensitivity reactions: Severe, life-threatening, generalized allergy, including anaphylaxis, can occur. Discontinue BASAGLAR, monitor and treat if indicated. ( 5.5 , 6.1 ) Hypokalemia: May be life-threatening. Monitor potassium levels in patients at risk of hypokalemia and treat if indicated. ( 5.6 ) Fluid retention and heart failure with concomitant use of thiazolidinediones (TZDs): Observe for signs and symptoms of heart failure; consider dosage reduction or discontinuation if heart failure occurs. ( 5.7 ) 5.1 Never Share a BASAGLAR Prefilled Pen Between Patients BASAGLAR prefilled pens must never be shared between patients, even if the needle is changed. Sharing poses a risk for transmission of blood-borne pathogens. 5.2 Hyperglycemia or Hypoglycemia with Changes in Insulin Regimen Changes in an insulin regimen (e.g., insulin strength, manufacturer, type, injection site or method of administration) may affect glycemic control and predispose to hypoglycemia [see Warnings and Precautions ( 5.3 )] or hyperglycemia. Repeated insulin injections into areas of lipodystrophy or localized cutaneous amyloidosis have been reported to result in hyperglycemia; and a sudden change in the injection site (to an unaffected area) has been reported to result in hypoglycemia [see Adverse Reactions ( 6 )] . Make any changes to a patient’s insulin regimen under close medical supervision with increased frequency of blood glucose monitoring. Advise patients who have repeatedly injected into areas of lipodystrophy or localized cutaneous amyloidosis to change the injection site to unaffected areas and closely monitor for hypoglycemia. For patients with type 2 diabetes, dosage adjustments of concomitant anti-diabetic products may be needed. 5.3 Hypoglycemia Hypoglycemia is the most common adverse reaction associated with insulins, including BASAGLAR [see Adverse Reactions ( 6.1 )] . Severe hypoglycemia can cause seizures, may be life-threatening or cause death. Hypoglycemia can impair concentration ability and reaction time; this may place an individual and others at risk in situations where these abilities are important (e.g., driving or operating other machinery). BASAGLAR, or any insulin, should not be used during episodes of hypoglycemia [see Contraindications ( 4 )] . Hypoglycemia can happen suddenly and symptoms may differ in each individual and change over time in the same individual. Symptomatic awareness of hypoglycemia may be less pronounced in patients with longstanding diabetes, in patients with diabetic nerve disease, in patients using medications that block the sympathetic nervous system (e.g., beta-blockers) [see Drug Interactions ( 7 )] , or in patients who experience recurrent hypoglycemia. Risk Factors for Hypoglycemia The risk of hypoglycemia after an injection is related to the duration of action of the insulin and, in general, is highest when the glucose lowering effect of the insulin is maximal. As with all insulins, the glucose lowering effect time course of BASAGLAR may vary in different individuals or at different times in the same individual and depends on many conditions, including the area of injection as well as the injection site blood supply and temperature [see Clinical Pharmacology ( 12.2 )] . The risk of hypoglycemia generally increases with intensity of glycemic control. Other factors which may increase the risk of hypoglycemia include changes in meal pattern (e.g., macronutrient content or timing of meals), changes in level of physical activity, or changes to co-administered medication [see Drug Interactions ( 7 )] . Patients with renal or hepatic impairment may be at higher risk of hypoglycemia [see Use in Specific Populations ( 8.6 , 8.7 )] . Risk Mitigation Strategies for Hypoglycemia Patients and caregivers must be educated to recognize and manage hypoglycemia. Self-monitoring of blood glucose plays an essential role in the prevention and management of hypoglycemia. In patients at higher risk for hypoglycemia and patients who have reduced symptomatic awareness of hypoglycemia, increased frequency of blood glucose monitoring is recommended. The long-acting effect of BASAGLAR may delay recovery from hypoglycemia. 5.4 Hypoglycemia Due to Medication Errors Accidental mix-ups between insulin products have been reported. To avoid medication errors between BASAGLAR and other insulins, instruct patients to always check the insulin label before each injection. 5.5 Hypersensitivity Reactions Severe, life-threatening, generalized allergy, including anaphylaxis, can occur with insulins, including BASAGLAR. If hypersensitivity reactions occur, discontinue BASAGLAR; treat per standard of care and monitor until symptoms and signs resolve [see Adverse Reactions ( 6.1 )] . BASAGLAR is contraindicated in patients who have had hypersensitivity reactions to insulin glargine or one of the excipients [see Contraindications ( 4 )] . 5.6 Hypokalemia All insulins, including BASAGLAR, cause a shift in potassium from the extracellular to intracellular space, possibly leading to hypokalemia. Untreated hypokalemia may cause respiratory paralysis, ventricular arrhythmia, and death. Monitor potassium levels in patients at risk for hypokalemia if indicated (e.g., patients using potassium-lowering medications, patients taking medications sensitive to serum potassium concentrations). 5.7 Fluid Retention and Heart Failure with Concomitant Use of PPAR-gamma Agonists Thiazolidinediones (TZDs), which are peroxisome proliferator-activated receptor (PPAR)-gamma agonists, can cause dose-related fluid retention, particularly when used in combination with insulin. Fluid retention may lead to or exacerbate heart failure. Patients treated with insulin, including BASAGLAR, and a PPAR-gamma agonist should be observed for signs and symptoms of heart failure. If heart failure develops, it should be managed according to current standards of care, and discontinuation or dose reduction of the PPAR-gamma agonist must be considered.

6 ADVERSE REACTIONS The following adverse reactions are discussed elsewhere: Hypoglycemia [see Warnings and Precautions ( 5.3 )] . Hypoglycemia Due to Medication Errors [see Warnings and Precautions ( 5.4 )] . Hypersensitivity Reactions [see Warnings and Precautions ( 5.5 )] . Hypokalemia [see Warnings and Precautions ( 5.6 )] . Adverse reactions commonly (≥5%) associated with insulin glargine products are: Hypoglycemia, allergic reactions, injection site reaction, lipodystrophy, pruritus, rash, edema, and weight gain. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Two clinical trials with BASAGLAR were conducted: one in type 1 diabetes and one in type 2 diabetes. The type 1 diabetes population had the following characteristics: Mean age was 41 years and mean duration of diabetes was 16 years. 58% were male. 75% were Caucasian, 2% Black or African American and 4% American Indian or Alaskan native. 4% were Hispanic. At baseline, mean eGFR was 109 mL/min/1.73m 2 . 73.5 percent of patients had eGFR>90 mL/min/1.73m 2 . The mean BMI was approximately 26 kg/m 2 . HbA 1c at baseline was 7.8%. The data in Table 1 reflect exposure of 268 patients to BASAGLAR with a mean exposure duration of 49 weeks. The type 2 diabetes population had the following characteristics: Mean age was 59 years and mean duration of diabetes was 11 years. 50% were male. 78% were Caucasian, 8% Black or African American and 5% American Indian or Alaskan native. 28% were Hispanic. At baseline, mean eGFR was 109 mL/min/1.73m 2 . 67.5 percent of patients had eGFR>90 mL/min/1.73m 2 . The mean BMI was approximately 32 kg/m 2 . HbA 1c at baseline was 8.3%. The data in Table 2 reflect exposure of 376 patients to BASAGLAR with a mean exposure duration of 22 weeks. Common adverse reactions were defined as reactions occurring in ≥5% of the population studied. Common adverse reactions during clinical trials in patients with type 1 diabetes mellitus and type 2 diabetes mellitus (other than hypoglycemia) are listed in Table 1 and Table 2 , respectively. Table 1: Adverse reactions occurring in ≥5% of adult patients with type 1 diabetes treated with BASAGLAR in a 52-week trial a Infections other than nasopharyngitis or upper respiratory tract infection. BASAGLAR + Insulin Lispro, % (n=268) Infection a 24 Nasopharyngitis 16 Upper respiratory tract infection 8 Table 2: Adverse reactions occurring in ≥5% of adult patients with type 2 diabetes treated with BASAGLAR in a 24-week trial a Infections other than nasopharyngitis or upper respiratory tract infection. BASAGLAR + Oral Antidiabetic Medication, % (n=376) Infection a 17 Nasopharyngitis 6 Upper respiratory tract infection 5 The frequencies of adverse reactions during a clinical trial of 5 years duration with another insulin glargine product, 100 units/mL, in patients with type 2 diabetes mellitus are listed in Table 3 . Table 3: Common adverse reactions in 5-year trial of adult patients with type 2 diabetes (adverse reactions with incidence ≥10% and higher with another insulin glargine product, 100 units/mL, than comparator) Another Insulin Glargine Product, % (n=514) NPH, % (n=503) Hypertension 20 19 Sinusitis 19 18 Cataract 18 16 Bronchitis 15 14 Back pain 13 12 Cough 12 7 Urinary tract infection 11 10 Diarrhea 11 10 Depression 11 10 Headache 10 9 The frequencies of adverse reactions during clinical trials with another insulin glargine product, 100 units/mL, in children and adolescents with type 1 diabetes mellitus are listed in Table 4 . Table 4: Adverse reactions in a 28-week clinical trial of pediatric patients with type 1 diabetes (adverse reactions with frequency ≥5% and the same or higher with another insulin glargine product, 100 units/mL, than comparator) Another Insulin Glargine Product, % (n=174) NPH, % (n=175) Rhinitis 5 5 Severe Hypoglycemia Hypoglycemia is the most commonly observed adverse reaction in patients using insulin, including BASAGLAR. The rates of reported hypoglycemia depend on the definition of hypoglycemia used, diabetes type, insulin dose, intensity of glucose control, background therapies, and other intrinsic and extrinsic patient factors. For these reasons, comparing rates of hypoglycemia in clinical trials for BASAGLAR with the incidence of hypoglycemia for other products may be misleading and also, may not be representative of hypoglycemia rates that will occur in clinical practice. Severe symptomatic hypoglycemia was defined as an event with symptoms consistent with hypoglycemia requiring the assistance of another person and associated with either a blood glucose below 50 mg/dL (≤56 mg/dL in the 5-year trial and ≤36 mg/dL in the ORIGIN trial) or prompt recovery after oral carbohydrate, intravenous glucose or glucagon administration. The incidence of severe symptomatic hypoglycemia in patients receiving BASAGLAR with type 1 diabetes mellitus and type 2 diabetes mellitus [see Clinical Studies ( 14 )] was 4% at 52 weeks and 1% at 24 weeks, respectively. The incidence of severe symptomatic hypoglycemia in a clinical trial with another insulin glargine product, 100 units/mL, in children and adolescents age 6 to 15 years with type 1 diabetes [see Clinical Studies ( 14 )] was 23% at 26 weeks. Table 5 displays the proportion of patients experiencing severe symptomatic hypoglycemia in another insulin glargine product, 100 units/mL, and Standard Care groups in the ORIGIN Trial [see Clinical Studies ( 14 )] . Table 5: Severe Symptomatic Hypoglycemia in the ORIGIN Trial ORIGIN Trial Median duration of follow-up: 6.2 years Another Insulin Glargine Product, 100 units/mL (N=6231) Standard Care (N=6273) Percent of patients 6 2 Allergic Reactions Some patients taking insulins, including BASAGLAR have experienced erythema, local edema, and pruritus at the site of injection. These conditions were usually self-limiting. Severe cases of generalized allergy (anaphylaxis) have been reported. Peripheral Edema Some patients taking BASAGLAR have experienced sodium retention and edema, particularly if previously poor metabolic control is improved by intensified insulin therapy. Lipodystrophy Administration of insulins subcutaneously, including BASAGLAR, has resulted in lipoatrophy (depression in the skin) or lipohypertrophy (enlargement or thickening of tissue) in some patients [see Dosage and Administration ( 2.1 )] . Weight gain Weight gain has occurred with insulins, including BASAGLAR, and has been attributed to the anabolic effects of insulin and the decrease in glycosuria. 6.2 Immunogenicity As with all therapeutic proteins, there is potential for immunogenicity. In a 52-week study of type 1 diabetes patients, 42% of patients who received BASAGLAR once daily were positive for anti-drug antibodies (ADA) at least once during the study, including 17% that were positive at baseline and 25% of patients who developed ADA during the study. Sixty-five percent of the ADA positive patients on BASAGLAR with antibody testing at week 52 remained ADA positive at week 52. In a 24-week study of type 2 diabetes patients, 17% of patients who received BASAGLAR once daily were positive for ADA at least once during the study. Among the subjects who were positive, 5% had ADA at baseline and 12% developed antibodies during the study. The percent binding of patients positive at baseline on BASAGLAR did not increase significantly during the study. Fifty-one percent of the ADA positive patients on BASAGLAR with antibody testing at week 24 remained ADA positive at week 24. There was no evidence that these antibodies had an impact on efficacy and safety outcomes. The detection of antibody formation is highly dependent on the sensitivity and specificity of the assay and may be influenced by several factors such as: assay methodology, sample handling, timing of sample collection, concomitant medication, and underlying disease. For these reasons, comparison of the incidence of antibodies to BASAGLAR with the incidence of antibodies in other studies or to other products may be misleading. 6.3 Postmarketing Experience The following adverse reactions have been identified during post-approval use of insulin glargine. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate reliably their frequency or establish a causal relationship to drug exposure. Medication errors have been reported in which other insulin products, particularly rapid-acting insulins, have been accidentally administered instead of insulin glargine. Localized cutaneous amyloidosis at the injection site has occurred. Hyperglycemia has been reported with repeated insulin injections into areas of localized cutaneous amyloidosis; hypoglycemia has been reported with a sudden change to an unaffected injection site.

7 DRUG INTERACTIONS Table 6 includes clinically significant drug interactions with BASAGLAR Table 6: Clinically Significant Drug Interactions with BASAGLAR Drugs That May Increase the Risk of Hypoglycemia Drugs: Antidiabetic agents, ACE inhibitors, angiotensin II receptor blocking agents, disopyramide, fibrates, fluoxetine, monoamine oxidase inhibitors, pentoxifylline, pramlintide, salicylates, somatostatin analogs (e.g., octreotide), and sulfonamide antibiotics. Intervention: Dose reductions and increased frequency of glucose monitoring may be required when BASAGLAR is co-administered with these drugs. Drugs That May Decrease the Blood Glucose Lowering Effect of BASAGLAR Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol, epinephrine, terbutaline), and thyroid hormones Intervention: Dose increases and increased frequency of glucose monitoring may be required when BASAGLAR is co-administered with these drugs. Drugs That May Increase or Decrease the Blood Glucose Lowering Effect of BASAGLAR Drugs: Alcohol, beta-blockers, clonidine, and lithium salts. Pentamidine may cause hypoglycemia, which may sometimes be followed by hyperglycemia. Intervention: Dose adjustment and increased frequency of glucose monitoring may be required when BASAGLAR is co-administered with these drugs. Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: beta-blockers, clonidine, guanethidine, and reserpine Intervention: Increased frequency of glucose monitoring may be required when BASAGLAR is co-administered with these drugs. Drugs that may increase the risk of hypoglycemia: antidiabetic agents, ACE inhibitors, angiotensin II receptor blocking agents, disopyramide, fibrates, fluoxetine, monoamine oxidase inhibitors, pentoxifylline, pramlintide, salicylates, somatostatin analog (e.g., octreotide), and sulfonamide antibiotics ( 7 ). Drugs that may decrease the blood glucose lowering effect: atypical antipsychotics, corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol, epinephrine, terbutaline), and thyroid hormones ( 7 ). Drugs that may increase or decrease the blood glucose lowering effect: alcohol, beta-blockers, clonidine, lithium salts, and pentamidine ( 7 ). Drugs that may blunt the signs and symptoms of hypoglycemia: beta-blockers, clonidine, guanethidine, and reserpine ( 7 ).

8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy Risk Summary Published studies with use of insulin glargine products during pregnancy have not reported a clear association with insulin glargine products and adverse developmental outcomes (see Data). There are risks to the mother and fetus associated with poorly controlled diabetes in pregnancy (see Clinical Considerations). In animal reproduction studies, another insulin glargine product was administered to rats before, during and throughout pregnancy at doses up to 7 times the clinical dose of 10 units/day and to rabbits during organogenesis at doses approximately 2 times the clinical dose of 10 units/day. The effects of this other insulin glargine product did not generally differ from those observed with regular human insulin in rats or rabbits (see Data). The estimated background risk of major birth defects is 6-10% in women with pre-gestational diabetes with a HbA1c >7 and has been reported to be as high as 20-25% in women with a HbA1c >10. The estimated background risk of miscarriage for the indicated population is unknown. In the US general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Poorly controlled diabetes in pregnancy increases the maternal risk for diabetic ketoacidosis, pre-eclampsia, spontaneous abortions, preterm delivery, and delivery complications. Poorly controlled diabetes increases the fetal risk for major birth defects, stillbirth, and macrosomia related morbidity. Data Human Data Published data do not report a clear association with insulin glargine products and major birth defects, miscarriage, or adverse maternal or fetal outcomes when insulin glargine products are used during pregnancy. However, these studies cannot definitely establish the absence of any risk because of methodological limitations including small sample size and some with no comparative group. Animal Data Subcutaneous reproduction and teratology studies have been performed with another insulin glargine product and with regular human insulin in rats and Himalayan rabbits. This other insulin glargine product was given to female rats before mating, during mating, and throughout pregnancy at dose up to 0.36 mg/kg/day, which is approximately 7 times the recommended human subcutaneous starting dose of 10 units/day (0.008 mg/kg/day) based on mg/m 2 . In rabbits, doses of 0.072 mg/kg/day, which is approximately 2 times the recommended human subcutaneous starting dose of 10 units/day (0.008 mg/kg/day), based on mg/m 2 , were administered during organogenesis. The effects of this other insulin glargine product did not generally differ from those observed with regular human insulin in rats and rabbits. However, in rabbits, five fetuses from two litters of the high-dose group exhibited dilation of the cerebral ventricles. Fertility and early embryonic development appeared normal. 8.2 Lactation Risk Summary There are no data on the presence of insulin glargine in human milk, the effects on the breastfed infant, or the effects on milk production. Endogenous insulin is present in human milk. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for BASAGLAR and any potential adverse effects on the breastfed child from BASAGLAR or from the underlying maternal condition. 8.4 Pediatric Use The safety and effectiveness of BASAGLAR have been established in pediatric patients (age 6 to 15 years) with type 1 diabetes based on an adequate and well-controlled trial of another insulin glargine product, 100 units/mL, in pediatric patients (age 6 to 15 years) with type 1 diabetes and additional data in adults with type 1 diabetes [see Clinical Studies ( 14.2 )] . The safety and effectiveness of BASAGLAR in pediatric patients younger than 6 years of age with type 1 diabetes and pediatric patients with type 2 diabetes has not been established. In the pediatric clinical trial, pediatric patients (age 6 to 15 years) with type 1 diabetes had a higher incidence of severe symptomatic hypoglycemia compared to the adults in trials with type 1 diabetes [see Adverse Reactions ( 6.1 )] . 8.5 Geriatric Use Of the total number of subjects in clinical studies of patients with type 2 diabetes who were treated with BASAGLAR or another insulin glargine product, 100 units/mL, each in combination with oral agents in a controlled clinical trial environment, 28.3% were 65 and over, while 4.5% were 75 and over. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. Nevertheless, caution should be exercised when BASAGLAR is administered to geriatric patients. In elderly patients with diabetes, the initial dosing, dose increments, and maintenance dosage should be conservative to avoid hypoglycemic reactions. Hypoglycemia may be difficult to recognize in the elderly. 8.6 Renal Impairment The effect of renal impairment on the pharmacokinetics of BASAGLAR has not been studied. Some studies with human insulin have shown increased circulating levels of insulin in patients with renal failure. Frequent glucose monitoring and dose adjustment may be necessary for BASAGLAR in patients with renal impairment [see Warnings and Precautions ( 5.3 )] . 8.7 Hepatic Impairment The effect of hepatic impairment on the pharmacokinetics of BASAGLAR has not been studied. However, as with all insulin products, more frequent glucose monitoring and dose adjustment may be necessary for BASAGLAR in patients with hepatic impairment [see Warnings and Precautions ( 5.3 )] .

8.1 Pregnancy Risk Summary Published studies with use of insulin glargine products during pregnancy have not reported a clear association with insulin glargine products and adverse developmental outcomes (see Data). There are risks to the mother and fetus associated with poorly controlled diabetes in pregnancy (see Clinical Considerations). In animal reproduction studies, another insulin glargine product was administered to rats before, during and throughout pregnancy at doses up to 7 times the clinical dose of 10 units/day and to rabbits during organogenesis at doses approximately 2 times the clinical dose of 10 units/day. The effects of this other insulin glargine product did not generally differ from those observed with regular human insulin in rats or rabbits (see Data). The estimated background risk of major birth defects is 6-10% in women with pre-gestational diabetes with a HbA1c >7 and has been reported to be as high as 20-25% in women with a HbA1c >10. The estimated background risk of miscarriage for the indicated population is unknown. In the US general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2-4% and 15-20%, respectively. Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Poorly controlled diabetes in pregnancy increases the maternal risk for diabetic ketoacidosis, pre-eclampsia, spontaneous abortions, preterm delivery, and delivery complications. Poorly controlled diabetes increases the fetal risk for major birth defects, stillbirth, and macrosomia related morbidity. Data Human Data Published data do not report a clear association with insulin glargine products and major birth defects, miscarriage, or adverse maternal or fetal outcomes when insulin glargine products are used during pregnancy. However, these studies cannot definitely establish the absence of any risk because of methodological limitations including small sample size and some with no comparative group. Animal Data Subcutaneous reproduction and teratology studies have been performed with another insulin glargine product and with regular human insulin in rats and Himalayan rabbits. This other insulin glargine product was given to female rats before mating, during mating, and throughout pregnancy at dose up to 0.36 mg/kg/day, which is approximately 7 times the recommended human subcutaneous starting dose of 10 units/day (0.008 mg/kg/day) based on mg/m 2 . In rabbits, doses of 0.072 mg/kg/day, which is approximately 2 times the recommended human subcutaneous starting dose of 10 units/day (0.008 mg/kg/day), based on mg/m 2 , were administered during organogenesis. The effects of this other insulin glargine product did not generally differ from those observed with regular human insulin in rats and rabbits. However, in rabbits, five fetuses from two litters of the high-dose group exhibited dilation of the cerebral ventricles. Fertility and early embryonic development appeared normal.